Coating control system and coating control method

Abstract

A coating control system is disclosed, including: a rotating mechanism performing a roll change operation, a reeling mechanism performing a reeling operation, a first reader disposed at a standby position, a controller electrically connected to the first reader, and a manufacturing execution system electrically connected to the controller. The rotating mechanism rotates a roll located at the standby position to a reeling station. The roll is provided with an electronic tag, and the electronic tag carries a roll identifier of the roll. The first reader reads the electronic tag provided on the roll located at the standby position and sends it to the manufacturing execution system via the controller. The manufacturing execution system generates a roll material identifier corresponding to the roll material, where the roll identifier corresponds to the roll material identifier.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application is a bypass continuation of International Application No. PCT / CN2024 / 142415 filed on Dec. 25, 2024, and claims priority to the Chinese patent application entitled “COATING CONTROL SYSTEM AND COATING CONTROL METHOD” filed on Jan. 2, 2024 (Application No.: 202410002283.7), the entire contents of each are incorporated herein by reference.TECHNICAL FIELD

[0002] This application relates to the field of control, and in particular to a coating control system and a coating control method.BACKGROUND

[0003] Coating equipment production involves coating cathode and anode electrode materials onto a current collector. The current collector is fed in roll form, unreeled and unfolded by an unreeling shaft, and then subjected to processes such as slurry coating, drying, and inspection, after which it is reeled by a reeling shaft.

[0004] In the related art, to achieve traceability of production data, during the reeling process, a roll located at a standby position requests the film roll number for that roll material from an MES (Manufacturing Execution System, Manufacturing Execution System) through manual triggering during loading, but there are cases where the request for the film roll number is forgotten.

[0005] The above statements are provided only to furnish background information related to this application and do not necessarily constitute prior art.SUMMARY

[0006] A technical problem to be solved by this application is to provide a coating control system and a coating control method, so as to automatically acquire a roll material identifier, thus reducing cases where the roll material identifier cannot be acquired.

[0007] In a first aspect, this application provides a coating control system, including: a rotating mechanism configured to perform a roll change operation so as to rotate a roll located at a standby position to a reeling station, where the roll is provided with an electronic tag, and the electronic tag carries a roll identifier of the roll; a reeling mechanism configured to perform a reeling operation so as to wind a roll material onto the roll at the reeling station, where the roll material is a section of coated film; a first reader disposed at the standby position and configured to read the electronic tag provided on the roll located at the standby position; a controller electrically connected to the first reader and configured to acquire the roll identifier from the first reader before the rotating mechanism performs the roll change operation and to send the roll identifier to a manufacturing execution system; and the manufacturing execution system electrically connected to the controller and configured to generate a roll material identifier corresponding to the roll material before the reeling mechanism performs the reeling operation, where the roll identifier corresponds to the roll material identifier.

[0008] In the technical solution of the embodiments of this application, by providing an electronic tag and a reader, the reader reads the roll identifier in the electronic tag, the controller then sends the roll identifier to the manufacturing execution system, and the manufacturing execution system generates a roll material identifier corresponding to the roll material, where the roll material identifier corresponds to the roll identifier, thereby achieving automatic acquisition of the roll material identifier, eliminating the manual process of requesting a film roll number, and thus reducing the probability of failing to acquire the roll material identifier.

[0009] In some embodiments, the electronic tag is located on an end face of the roll; and the first reader is disposed on a frame at the standby position, and when the roll is at the standby position, the electronic tag is within a reading range of the first reader. By specifying the positions of the electronic tag and the first reader, acquisition of the content of the electronic tag can be achieved, improving the efficiency of acquiring the roll identifier.

[0010] In some embodiments, the controller is further configured to acquire production data related to the roll material, where the production data corresponds to the roll identifier and the roll material identifier. As the production data corresponds to the roll identifier and the roll material identifier, the reliability of film roll data traceability is improved.

[0011] In some embodiments, the controller is further configured to send a first request message to the manufacturing execution system, where the first request message includes the roll identifier and a station where the roll is located; and the manufacturing execution system is further configured to determine, according to the first request message, a first feedback result including matching information between the roll and the station where the roll is located, and to send the first feedback result to the controller so that the controller controls the coating control system according to the first feedback result. Through interaction between the controller and the manufacturing execution system, abnormal rolls can be detected in a timely manner, reducing the probability of coating failure caused by subsequent use of abnormal rolls.

[0012] In some embodiments, the controller is further configured to control, when the first feedback result includes a match between the roll and the station where the roll is located, the rotating mechanism to perform the roll change operation. The roll change operation is performed only when the roll matches the station where the roll is located, improving subsequent material docking efficiency.

[0013] In some embodiments, the manufacturing execution system is further configured to determine a target station of the roll according to the roll identifier, and to determine, according to the target station of the roll and the station where the roll is located, whether the roll matches the station where the roll is located. By determining the target station of the roll based on roll information and then determining whether the roll matches the station where it is located, subsequent invalid operations of coating control due to mismatch can be reduced.

[0014] In some embodiments, the first request message further includes a current product model, and the first feedback result further includes matching information between a target product model and the current product model, where the controller is further configured to retrieve, when the first feedback result includes a match between the roll and the station where the roll is located and a mismatch between the target product model and the current product model, target coating operation parameters matching the target product model, replace coating operation parameters corresponding to the current product model with the target coating operation parameters, and control the rotating mechanism to perform the roll change operation. When the target product model does not match the current product model, automatically adjusting the coating operation parameters can improve the accuracy of subsequent coating processing.

[0015] In some embodiments, the coating control system further includes: a tape splicing mechanism disposed at the reeling station and configured to perform a tape splicing operation on the roll; and a second reader disposed at the reeling station and configured to read the electronic tag provided on the roll located at the reeling station; where the controller is further configured to control, according to recognition of the electronic tag by the second reader, the tape splicing mechanism to perform the tape splicing operation on the roll. By recognizing the electronic tag with the second reader to achieve the tape splicing operation on the roll, the problem of low tape splicing control accuracy due to sensing failure can be reduced.

[0016] In some embodiments, the second reader is disposed on a frame at the reeling station, and when the roll is at the reeling station, the electronic tag is within a reading range of the second reader. By describing the positions of the electronic tag and the second reader, the accuracy of signal recognition can be improved.

[0017] In some embodiments, the controller is further configured to: position the roll according to recognition of the electronic tag by the second reader; and control, based on positioning information of the roll, the tape splicing mechanism to perform the tape splicing operation on the roll. Using an arrival signal of the electronic tag for roll positioning and tape splicing control improves control accuracy and reduces the risk of tape splicing failure due to contamination or lighting issues.

[0018] In some embodiments, an adhesive material is further provided on a side face of the roll, the adhesive material extends axially along the roll, and a projection of the adhesive material on the end face of the roll is at a same circumferential position as the electronic tag, where the controller is further configured to: determine a first time for the roll to rotate from when the second reader recognizes the electronic tag to when a first edge of the adhesive material contacts the roll material; determine a second time for the roll to rotate from when the first edge of the adhesive material contacts the roll material to when a second edge contacts the roll material, where the first edge contacts the roll material before the second edge; determine a third time required for a pressure roller of the tape splicing mechanism to move from a pressure roller starting position to a pressing position; determine a fourth time required for a cutter of the tape splicing mechanism to move from a cutter starting position to a cutting position; and control extension and retraction times of the pressure roller and the cutter based on the first time, the second time, the third time, and the fourth time, so as to achieve the tape splicing operation on the roll. By using recognition and rotation of the electronic tag to control the extension and retraction times of the pressure roller and the cutter, the tightness between the roll material and the adhesive material can be improved, and the problem of excessively long trailing tails can be reduced, thereby improving tape splicing efficiency and tape splicing quality.

[0019] In some embodiments, the electronic tag includes a radio frequency identification RFID tag, and the first reader includes an RFID read-write device; or the electronic tag includes a near field communication NFC card, and the first reader includes an NFC card reader; or the electronic tag includes a two-dimensional code, and the first reader includes a two-dimensional code recognizer.

[0020] In a second aspect, this application provides a coating control method, including: before a rotating mechanism performs a roll change operation, acquiring, by a controller through a first reader, a roll identifier carried by an electronic tag on a roll located at a standby position, and sending the roll identifier to a manufacturing execution system; before a reeling mechanism performs a reeling operation, generating, by the manufacturing execution system, a roll material identifier of a roll material to be wound onto the roll, and sending the roll material identifier to the controller, where the roll material identifier corresponds to the roll identifier, and the roll material is a section of coated film; and controlling, by the controller, the reeling mechanism to perform the reeling operation so as to wind the roll material onto the roll.

[0021] In the technical solution of the embodiments of this application, by providing an electronic tag and a reader, the reader reads the roll identifier in the electronic tag, the controller then sends the roll identifier to the manufacturing execution system, and the manufacturing execution system generates a roll material identifier corresponding to the roll material, where the roll material identifier corresponds to the roll identifier, thereby achieving automatic acquisition of the roll material identifier, eliminating the manual process of requesting a film roll number, and thus reducing the probability of failing to acquire the roll material identifier.

[0022] In some embodiments, the controller acquires production data related to the roll material, where the production data corresponds to the roll identifier and the roll material identifier. As the production data corresponds to the roll identifier and the roll material identifier, the reliability of film roll data traceability is improved.

[0023] In some embodiments, the controller sends a first request message to the manufacturing execution system, where the first request message includes the roll identifier and a station where the roll is located; the manufacturing execution system determines, according to the first request message, a first feedback result including matching information between the roll and the station where the roll is located, and sends the first feedback result to the controller; and the controller controls the coating control system according to the first feedback result. Through interaction between the controller and the manufacturing execution system, abnormal rolls can be detected in a timely manner, reducing the probability of coating failure caused by subsequent use of abnormal rolls.

[0024] In some embodiments, the step of the controller controlling the coating control system according to the first feedback result includes: when the first feedback result includes a match between the roll and the station where the roll is located, controlling, by the controller, the rotating mechanism to perform the roll change operation. The roll change operation is performed only when the roll matches the station where the roll is located, improving subsequent material docking efficiency.

[0025] In some embodiments, the step of the manufacturing execution system determining, according to the first request message, the first feedback result including matching information between the roll and the station where the roll is located includes: determining, by the manufacturing execution system, a target station of the roll according to the roll identifier, and determining, according to the target station of the roll and the station where the roll is located, whether the roll matches the station where the roll is located. By determining the target station of the roll based on roll information and then determining whether the roll matches the station where it is located, subsequent invalid operations of coating control due to mismatch can be reduced.

[0026] In some embodiments, the first request message further includes a current product model, and the first feedback result further includes matching information between a target product model and the current product model, where the step of the controller controlling the coating control system according to the first feedback result includes: when the first feedback result includes a match between the roll and the station where the roll is located and a mismatch between the target product model and the current product model, retrieving, by the controller, target coating operation parameters matching the target product model, replacing coating operation parameters corresponding to the current product model with the target coating operation parameters, and controlling the rotating mechanism to perform the roll change operation. When the target product model does not match the current product model, automatically adjusting the coating operation parameters can improve the accuracy of subsequent coating processing.

[0027] In some embodiments, the controller, when completing a tape splicing operation on the roll, sends a second request message to the manufacturing execution system, where the second request message includes the roll identifier, the station where the roll is located, and a current product model; and the manufacturing execution system generates a roll material identifier of the roll material according to the second request message, binds a correspondence between the roll material identifier and the roll identifier, and sends a second feedback message to the controller. Since the manual process of requesting a film roll number is eliminated, the probability of forgetting to request or repeatedly requesting a roll material identifier is reduced.

[0028] In some embodiments, the controller sends the acquired production data related to the roll material to the manufacturing execution system; and the manufacturing execution system binds a correspondence among the production data, the roll material identifier, and the roll identifier. The reliability of film roll data traceability is improved, and the risk of data loss due to human factors is reduced.

[0029] In some embodiments, the second feedback message includes the roll identifier and roll material status information. This helps operators to grasp the roll material status information in a timely manner.

[0030] In some embodiments, the controller controls, according to recognition of the electronic tag located at the reeling station by a second reader, a tape splicing mechanism to perform a tape splicing operation on the roll. By recognizing the electronic tag with the second reader to achieve the tape splicing operation on the roll, the problem of low tape splicing control accuracy due to sensing failure can be reduced.

[0031] In some embodiments, the step of the controller controlling, according to recognition of the electronic tag located at the reeling station by the second reader, the tape splicing mechanism to perform the tape splicing operation on the roll includes: positioning the roll according to the recognition of the electronic tag by the second reader; and controlling, based on positioning information of the roll, the tape splicing mechanism to perform the tape splicing operation on the roll. Using an arrival signal of the electronic tag for roll positioning and tape splicing control improves control accuracy and reduces the risk of tape splicing failure due to contamination or lighting issues.

[0032] In some embodiments, the electronic tag is located on an end face of the roll, the second reader is located on a frame at the reeling station, and when the roll is at the reeling station, the electronic tag is within a reading range of the second reader, where an adhesive material is located on a side face of the roll and extends axially along the roll, and a projection of the adhesive material on the end face of the roll is at a same circumferential position as the electronic tag, where the step of the controller controlling the tape splicing mechanism to perform the tape splicing operation on the roll includes: determining, by a controller, a first time for the roll to rotate from when the second reader recognizes the electronic tag to when a first edge of the adhesive material contacts the roll material; determining, by the controller, a second time for the roll to rotate from when the first edge of the adhesive material contacts the roll material to when a second edge contacts the roll material, where the first edge contacts the roll material before the second edge; determining a third time required for a pressure roller of the tape splicing mechanism to move from a pressure roller starting position to a pressing position; determining a fourth time required for a cutter of the tape splicing mechanism to move from a cutter starting position to a cutting position; and controlling, by the controller, extension and retraction times of the pressure roller and the cutter based on the first time, the second time, the third time, and the fourth time, so as to achieve tape splicing control on the roll. By using recognition and rotation of the electronic tag to control the extension and retraction times of the pressure roller and the cutter, the tightness between the roll material and the adhesive material can be improved, and the problem of excessively long trailing tails can be reduced, thereby improving tape splicing efficiency and tape splicing quality.

[0033] In some embodiments, the determining, by a controller, a first time for the roll to rotate includes: determining the first time for the roll to rotate according to an angle by which the roll rotates from when the second reader recognizes the electronic tag to when the first edge of the adhesive material contacts the roll material, and according to a time between two adjacent recognitions of the electronic tag by the second reader. By converting the angle and the time taken for the electronic tag to rotate one full circle, the first time can be obtained, facilitating subsequent determination of the extension and retraction times of the pressure roller and the cutter.

[0034] In some embodiments, the determining, by the controller, a second time for the roll to rotate includes: determining the second time according to a time between two adjacent recognitions of the electronic tag by the second reader, a circumference of the roll, and width information between the first edge and the second edge of the adhesive material. By using the time taken for the electronic tag to rotate one full circle, the circumference of the roll, and the width of the adhesive material, the second time can be obtained, facilitating subsequent determination of the extension and retraction times of the pressure roller and the cutter.

[0035] In some embodiments, the controlling, by the controller, extension and retraction times of the pressure roller and the cutter includes: after the second reader recognizes the electronic tag, controlling the pressure roller to extend after a first predetermined time, where the first predetermined time is determined according to a difference between the first time and the third time; after the second reader recognizes the electronic tag, controlling the cutter to extend after a second predetermined time, where the second predetermined time is determined according to a difference between a sum of the first time and the second time and the fourth time; and after the second reader recognizes the electronic tag, controlling the pressure roller and the cutter to retract after a third predetermined time, where the third predetermined time is determined according to a sum of the first time and the second time. By precisely controlling the extension and retraction times of the pressure roller and the cutter, the adhesion between the roll material and the adhesive material on the roll can be improved, and excessively long trailing tails can be reduced, thereby improving tape splicing quality and efficiency.

[0036] Other features and advantages of this application will become apparent from the following detailed description of exemplary embodiments of this application with reference to the accompanying drawings.BRIEF DESCRIPTION OF DRAWINGS

[0037] To explain the technical solutions of the embodiments of this application more clearly, the drawings required in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of this application, and those of ordinary skill in the art can obtain other drawings according to these drawings without creative efforts.

[0038] FIG. 1 is a schematic diagram of a coating control system according to one or more embodiments;

[0039] FIG. 2A is a schematic diagram of positions of an electronic tag and a reader according to one or more embodiments;

[0040] FIG. 2B is a schematic diagram of positions of an electronic tag and a reader according to one or more embodiments;

[0041] FIG. 3 is a schematic diagram of a coating control system according to one or more embodiments;

[0042] FIG. 4A is a schematic diagram of a tape splicing process according to one or more embodiments;

[0043] FIG. 4B is a schematic diagram of a tape splicing process according to one or more embodiments;

[0044] FIG. 4C is a schematic diagram of a tape splicing process according to one or more embodiments;

[0045] FIG. 4D is a schematic diagram of a tape splicing process according to one or more embodiments;

[0046] FIG. 5 is a schematic timing diagram of tape splicing by a tape splicing mechanism according to one or more embodiments;

[0047] FIG. 6 is a schematic diagram of a coating control method according to one or more embodiments;

[0048] FIG. 7A is a schematic diagram of loading an empty roll during a reeling process according to one or more embodiments;

[0049] FIG. 7B is a schematic diagram of roll change during a reeling process according to one or more embodiments;

[0050] FIG. 7C is a schematic diagram of tape splicing during a reeling process according to one or more embodiments;

[0051] FIG. 7D is a schematic diagram of reeling during a reeling process according to one or more embodiments;

[0052] FIG. 8 is a schematic diagram of a coating control method according to one or more embodiments;

[0053] FIG. 9 is a schematic diagram of a coating control method according to one or more embodiments;

[0054] FIG. 10 is a schematic diagram of a coating control method according to one or more embodiments; and

[0055] FIG. 11 is a schematic diagram of a coating control method according to one or more embodiments.DESCRIPTION OF EMBODIMENTS

[0056] The embodiments of this application will be further described in detail below with reference to the accompanying drawings and embodiments. The detailed description and drawings of the following embodiments are used to exemplarily illustrate the principles of this application, but cannot be used to limit the scope of this application, that is, this application is not limited to the described embodiments.

[0057] In the description of this application, it should be noted that, unless otherwise stated, “multiple” means two or more; and the orientations or positional relationships indicated by the terms “upper”, “lower”, “left”, “right”, “inner”, “outer”, and the like are only for convenience of describing this application and simplifying the description, and do not indicate or imply that the referred means or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms “first”, “second”, “third”, and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. “Vertical” is not strictly vertical but within an allowable error range. “Parallel” is not strictly parallel but within an allowable error range.

[0058] At the same time, it should be understood that, for convenience of description, the dimensions of various parts shown in the drawings are not drawn according to actual proportional relationships.

[0059] The following description of at least one exemplary embodiment is actually merely illustrative and in no way serves as any limitation on this application and its application or use.

[0060] Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and devices should be considered as part of the description.

[0061] In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0062] It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0063] To make the objectives, technical solutions, and advantages of this application clearer, this application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0064] In the related art, a coating reeling process includes an empty roll waiting for loading at a standby position, a turret rotating to drive the empty roll to rotate to a working position, and then performing tape splicing and reeling control. After the roll is full, the turret rotates to drive the full roll to rotate to the standby position, and after the full roll is unloaded at the standby position, it is sent to the next process. To achieve traceability of film roll generation data, the film roll number of a roll material needs to be acquired through manual triggering, but there are cases where the request for the film roll number is forgotten.

[0065] In the embodiments of this application, by providing an electronic tag and a reader, recognition of a roll identifier is achieved, and then a roll material identifier corresponding to a roll material on the roll is generated, so that the roll, the roll material, the roll identifier, and the roll material identifier have a correspondence. Automatic acquisition through the roll material identifier can reduce the probability of failing to acquire film roll information due to human forgetting.

[0066] FIG. 1 is a schematic diagram of a coating control system according to one or more embodiments. The coating control system includes a rotating mechanism 1, a reeling mechanism 2, a first reader 3, a controller 4, and a manufacturing execution system 5.

[0067] The rotating mechanism 1 is configured to perform a roll change operation so as to rotate a roll 6 located at a standby position to a reeling station, where the roll is provided with an electronic tag 7, and the electronic tag carries a roll identifier of the roll.

[0068] In some embodiments, the rotating mechanism 1 is, for example, a turret. The turret drives the roll to rotate from the standby position to the reeling station so as to achieve tape splicing and reeling operations on the roll at the reeling station.

[0069] In some embodiments, the electronic tag is, for example, an RFID (Radio Frequency Identification, Radio Frequency Identification) tag, and the RFID tag has advantages such as waterproofness, antimagnetism, high temperature resistance, long service life, encryptable data on the tag, larger data storage capacity, and freely changeable stored information.

[0070] The RFID tag carries a roll identifier of the roll, and the roll identifier is, for example, a roll ID (Identity document, Identity document) number, and the ID number is a unique identification code of the roll.

[0071] In some embodiments, the electronic tag is, for example, an NFC (Near Field Communication, Near Field Communication) card, and the NFC card has safe and convenient attributes. The NFC tag can carry a roll identifier of the roll.

[0072] In some embodiments, the electronic tag is, for example, a two-dimensional code, and the two-dimensional code has characteristics of low cost and strong universality and can carry a roll identifier of the roll.

[0073] The reeling mechanism 2 is configured to perform a reeling operation so as to wind a roll material onto the roll 6 at the reeling station, where the roll material is a section of coated film. In some embodiments, the reeling mechanism 2 includes a reeling shaft, and rotation of the reeling shaft drives the roll material to be wound onto the roll.

[0074] The first reader 3 is disposed at the standby position and configured to read the electronic tag 7 provided on the roll 6 located at the standby position.

[0075] In some embodiments, when the electronic tag is an RFID tag, the first reader includes an RFID read-write device capable of reading a roll identifier carried by the RFID tag.

[0076] In some embodiments, when the electronic tag is an NFC card, the first reader includes an NFC card reader, and the NFC card reader is capable of reading a roll identifier carried by the NFC card.

[0077] In some embodiments, when the electronic tag is a two-dimensional code, the first reader includes a two-dimensional code recognizer, and the two-dimensional code recognizer is capable of reading a roll identifier carried by the two-dimensional code.

[0078] The controller 4 is electrically connected to the first reader 3 and is configured to acquire the roll identifier from the first reader 3 before the rotating mechanism 1 performs the roll change operation and to send the roll identifier to the manufacturing execution system 5.

[0079] In some embodiments, the controller is, for example, a PLC (Programmable Logic Controller, Programmable Logic Controller). The PLC can acquire a roll ID from the first reader. For example, after the first reader reads the roll ID, it sends the roll ID to the PLC. Those skilled in the art should understand that the PLC here is only for illustration, and the function of the controller can also be achieved by a structure composed of an integrated circuit, related components, and the like.

[0080] The manufacturing execution system 5 is electrically connected to the controller 4 and is configured to generate a roll material identifier corresponding to the roll material before the reeling mechanism 2 performs the reeling operation, where the roll identifier corresponds to the roll material identifier.

[0081] In some embodiments, the roll material identifier is information for identifying the roll material, that is, an identification number of the roll material, for example, a film roll number of the roll material.

[0082] In some embodiments, the MES determines whether the roll is available, and if the roll is available, generates a film roll number and binds the film roll number to the roll identifier, thereby achieving binding between the film roll number and the roll.

[0083] In some embodiments, the MES stores a correspondence between roll material identifiers and roll identifiers to obtain related information of the roll material through the correspondence during subsequent traceability of materials.

[0084] In some embodiments, after generating a roll material identifier corresponding to the roll material, the MES outputs the roll material identifier and the roll identifier to an external memory, and the memory stores the correspondence between the roll material identifier and the roll identifier, which can reduce the storage space of the MES itself.

[0085] In the above embodiments, by providing an electronic tag carrying a roll identifier on a roll, a first reader reads the roll identifier carried by the electronic tag and sends it to a manufacturing execution system through a controller, and the manufacturing execution system generates a roll material identifier of a roll material corresponding to the roll identifier, thereby achieving automatic acquisition of the roll material identifier. Since there is no need for a human request process to acquire the roll material identifier, the probability of failing to acquire the roll material identifier is reduced.

[0086] In some embodiments, one roll identifier corresponds to one roll material identifier, which can also reduce the case where multiple roll material identifiers are repeatedly requested, resulting in subsequent production data being unable to determine which roll material identifier to match.

[0087] In some embodiments of this application, as shown in FIGS. 2A and 2B, the electronic tag 7 is located on an end face of the roll 6. Since a roll material 61 is wound around the roll 6, providing the electronic tag on the end face of the roll facilitates more convenient and faster recognition of the electronic tag by the first reader.

[0088] The first reader 3 is disposed on a frame 31 at the standby position of a coater, and when the roll is at the standby position, the electronic tag is within a reading range of the first reader. The frame has a certain distance from the roll. Providing the electronic tag on the end face of the roll and providing the first reader on the frame make installation more convenient compared to providing it at other positions.

[0089] In this embodiment, since the electronic tag is within the reading range of the first reader, the first reader can accurately and quickly recognize a roll ID in the electronic tag. In addition, manual triggering to request a film roll number may cause repeated requests, while in this embodiment, by providing an electronic tag and a reader, the subsequent manual process of requesting a film roll number can be eliminated, thereby also reducing the probability of repeatedly requesting a film roll number.

[0090] In some other embodiments of this application, the controller 4 is further configured to acquire production data related to the roll material, where the production data corresponds to the roll identifier and the roll material identifier.

[0091] During production of the roll material, there are some processing parameters, such as weight data or drying data, to facilitate subsequent quality traceability, so production data needs to be saved.

[0092] For example, after production is completed, the PLC sends the production data to the MES, and the MES saves a correspondence among the production data, the roll identifier, and the roll material identifier. In the next process, a reader acquires the roll identifier, and then according to the correspondence, a roll material identifier and production data corresponding to the roll identifier are searched, thereby improving the reliability of film roll data traceability and reducing the risk of data loss due to human factors.

[0093] In some embodiments, the next process includes, for example, rolling and cutting, for example, rolling the roll material into a material with uniform thickness according to the production data, and then performing a cutting operation to delete invalid materials.

[0094] For another example, the PLC sends the production data to another external memory, and the memory stores a correspondence among the production data, the roll identifier, and the roll material identifier. When it is necessary to trace roll material data, a reader acquires the roll identifier, and then corresponding roll material identifier and production data are called from the memory, which not only improves the reliability of film roll data traceability but also reduces the storage space pressure of the MES.

[0095] In addition, in the above embodiments, since the production data corresponds to the roll identifier and the roll material identifier, there is no need to print a paper shipping tag and stick it on a film roll, reducing the risk of film roll data loss due to insecure sticking of the shipping tag or falling off of the shipping tag.

[0096] In some embodiments of this application, the controller 4 is further configured to send a first request message to the manufacturing execution system 5, where the first request message includes the roll identifier and a station where the roll is located; the manufacturing execution system 5 is further configured to determine, according to the first request message, a first feedback result including matching information between the roll and the station where the roll is located, and to send the first feedback result to the controller 4 so that the controller 4 controls the coating control system according to the first feedback result.

[0097] In this embodiment, through interaction between the controller and the manufacturing execution system, the manufacturing execution system determines matching information between the roll and the station and feeds the matching information back to the controller, and the controller performs coating control according to the matching information, which can improve a material docking process of coating and subsequent processes, improve docking efficiency, and reduce labor costs caused by manual judgment.

[0098] In some embodiments, the manufacturing execution system 5 is further configured to determine a target station of the roll according to the roll identifier, and to determine, according to the target station of the roll and the station where the roll is located, whether the roll matches the station where the roll is located.

[0099] For example, when an empty roll is loaded at the standby position, the PLC sends a roll ID and station information to the MES, and the MES determines whether a target station of the roll matches the station where the roll is located. If the target station of the roll matches the station where the roll is located, it indicates that the roll is a correct roll. If the target station of the roll does not match the station where the roll is located, it indicates that the roll is an abnormal roll. Through automatic recognition of abnormal rolls, labor costs for recognition can be reduced, and timely recognition of abnormal rolls can reduce the probability of errors in subsequent processes.

[0100] In some embodiments, the station information is, for example, a machine number.

[0101] In some embodiments, the controller 4 is further configured to issue an alarm message when the first feedback result includes a mismatch between the roll and the station where the roll is located.

[0102] For example, when the MES recognizes that the roll is an abnormal roll, it feeds back station information of the roll to the PLC, and the PLC outputs an alarm message, for example, outputs a prompt of “please replace with a correct roll”, which helps operators to replace equipment in a timely manner and reduces the risk of equipment damage or material scrapping caused by subsequent erroneous processes such as roll change and roll reeling of an erroneous roll.

[0103] In some embodiments, the controller 4 is further configured to control, when the first feedback result includes a match between the roll and the station where the roll is located, the rotating mechanism to perform the roll change operation.

[0104] For example, when the manufacturing execution system recognizes that a target station of the roll matches the station where the roll is located, it feeds back station information of the roll to the PLC, and the PLC determines that the roll is a correct roll and then waits for a roll change operation, providing a basis for execution of subsequent correct processes.

[0105] In some embodiments of this application, the controller 4 is further configured to send a first request message to the manufacturing execution system 5, where the first request message includes the roll identifier, a station where the roll is located, and a current product model. The manufacturing execution system 5 is further configured to determine, according to the first request message, a first feedback result including matching information between the roll and the station where the roll is located and matching information between a target product model and the current product model, and to send the first feedback result to the controller 4 so that the controller 4 controls the coating control system according to the first feedback result.

[0106] In this embodiment, by recognizing roll information, flexible control such as automatic model change of equipment and automatic processing of abnormal rolls can be achieved, thereby improving a material docking process of coating and subsequent processes and improving docking efficiency.

[0107] In some embodiments, the manufacturing execution system 5 is further configured to, when the roll matches the station where the roll is located, recognize a target product model according to the roll identifier and determine whether the target product model matches the current product model.

[0108] For example, the PLC sends a roll ID, station information, and a current product model to the MES, and the MES determines whether a target station of the roll matches the station where the roll is located. If the target station of the roll matches the station where the roll is located, it further determines whether a target product model corresponding to the roll matches the current product model. This embodiment achieves acquisition of product information produced by a coater. When the target product model corresponding to the roll matches the current product model, the roll is marked as a correct roll. When the target product model corresponding to the roll does not match the current product model, the roll is marked as a model-change roll, that is, the model of the equipment needs to be changed, facilitating subsequent automatic model change and equipment parameter adjustment through the PLC.

[0109] In some embodiments, the controller 4 is further configured to retrieve, when the first feedback result includes a match between the roll and the station where the roll is located and a mismatch between the target product model and the current product model, target coating operation parameters matching the target product model, replace coating operation parameters corresponding to the current product model with the target coating operation parameters, and control the rotating mechanism to perform a roll change operation.

[0110] For example, when the PLC recognizes that the roll is marked as a model-change roll, it retrieves target coating operation parameters matching a target product model, performs parameter switching, and further performs a model change action, that is, replaces some actuators of the coater or changes positions of some actuators of the coater. For example, a camera corresponding to product model A takes pictures at position M, while a camera corresponding to product model B takes pictures at position N, so the camera position needs to be changed. After the model change is completed, the coater continues, and a roll change process can be subsequently waited for startup.

[0111] In the above embodiments, by recognizing roll information, when it is determined that a target product model does not match a current product model, automatic model change and automatic adjustment of equipment parameters are achieved, reducing costs of manual misjudgment and reducing the problem of material docking failure due to inconsistent equipment parameter models.

[0112] In some embodiments, the controller 4 is further configured to control, when the first feedback result includes a match between the roll and the station where the roll is located and a match between the target product model and the current product model, the rotating mechanism to perform the roll change operation. In this embodiment, through judgment of a roll station and a product model, the roll change operation is performed only when the roll is a correct roll, reducing the risk of subsequent process material errors due to roll errors or product model errors.

[0113] In some other embodiments of this application, the controller 4 is further configured to, when a tape splicing operation on the roll is completed, send a second request message to the manufacturing execution system 5, where the second request message includes the roll identifier, a station where the roll is located, and a current product model; the manufacturing execution system 5 is further configured to generate a roll material identifier of the roll material according to the second request message, bind a correspondence between the roll material identifier and the roll identifier, and send a second feedback message to the controller.

[0114] For example, after roll change and tape splicing operations are completed, the PLC sends a roll ID, a machine number, and a current product model to the MES to request generation of a new film roll number. The MES generates a new film roll number, binds the film roll number to the roll ID, ends data recording and processing of the previous film roll, directs a target station to the station where the roll is located, and feeds back the roll ID and roll material status information to the PLC. The roll material status information includes, for example, whether the roll material is in production or has been produced, and the PLC can grasp the roll material status in a timely manner.

[0115] In the above embodiments, a binding process of roll material information is interacted between the controller and the manufacturing execution system, eliminating a manual process of requesting a film roll number, which can improve equipment automation degree and reduce the risk of not requesting a roll material identifier or repeatedly requesting a roll material identifier.

[0116] In the related art, the film roll number of a roll material is manually requested, and after production is completed, a shipping tag is printed and the shipping tag is stuck on a film roll, but there is a case where the shipping tag is not firmly stuck, causing the shipping tag to fall off, which easily causes loss of film roll data.

[0117] In some other embodiments of this application, the controller 4 is further configured to send the acquired production data related to the roll material to the manufacturing execution system 5; the manufacturing execution system 5 is further configured to bind a correspondence among the production data, the roll material identifier, and the roll identifier.

[0118] For example, during production, the PLC records in real time production data corresponding to a film roll number. The PLC may save the production data or may not save the production data, but sends the production data and the corresponding film roll number, roll ID, or the like to the MES, and the MES saves a correspondence among the production data, the film roll number, and the roll ID. After production is completed, when it is necessary to trace film roll data, the MES searches for corresponding production data and film roll number through the roll ID. Since there is no need for manual printing and sticking of a shipping tag, or other steps, the risk of film roll data loss is greatly reduced, and even the risk of equipment damage and material scrapping due to processing of an erroneous film roll in a subsequent process is reduced. In addition, since a film roll number request and production data binding are achieved through interaction between the controller and the manufacturing execution system, the risk that one roll requests multiple film roll numbers and production data cannot determine which film roll number to match is reduced.

[0119] FIG. 3 is a schematic diagram of a coating control system according to one or more embodiments. In this embodiment, the coating control system further includes a tape splicing mechanism 8 and a second reader 9, where the tape splicing mechanism 8 is disposed at the reeling station and configured to perform a tape splicing operation on the roll 6; the second reader 9 is disposed at the reeling station and configured to read the electronic tag 7 provided on the roll 6 located at the reeling station; and the controller 4 is further configured to control, according to recognition of the electronic tag by the second reader 9, the tape splicing mechanism 8 to perform the tape splicing operation on the roll.

[0120] In the related art, during tape splicing, a color mark and a color mark sensor are used to achieve roll positioning, which easily causes problems such as sensing failure of the color mark sensor due to color mark contamination. In the above embodiments, a reader is used to recognize an electronic tag to perform tape splicing control, which can improve tape splicing success rate and tape splicing quality and reduce the risk of tape splicing failure due to color mark contamination and lighting issues.

[0121] In some embodiments, the tape splicing mechanism includes components such as a pressure roller and a cutter for performing tape splicing operations, and the pressure roller, the cutter, and the like are located at one end of a swing arm mechanism close to the roll. The pressure roller is used to press the roll material onto an adhesive material. The cutter is used to cut the roll material on the current roll from the roll material on the previous roll.

[0122] In some embodiments, the second reader 9 is disposed on a frame at the reeling station, and when the roll is at the reeling station, the electronic tag 7 is within a reading range of the second reader 9, so that the second reader can recognize the electronic tag to achieve positioning of the roll. In addition, providing the second reader on the frame makes installation easier compared to installation at other positions.

[0123] In some embodiments, the controller 4 is further configured to position the roll according to recognition of the electronic tag by the second reader 9; and control, based on positioning information of the roll, the tape splicing mechanism to perform the tape splicing operation on the roll.

[0124] In this embodiment, since a position of the reader is fixed and a relative position of the electronic tag on the roll is fixed, the electronic tag rotates with the roll during rotation of the roll. When the reader detects the electronic tag, it indicates that the roll has rotated to a predetermined position, and this moment can be used as an initial moment of a tape splicing control timing. By calculating a specific moment for performing tape splicing, precise control of tape splicing can be achieved. The tape splicing process will be described in detail below.

[0125] In some embodiments, an adhesive material is further provided on a side face of the roll, the adhesive material is, for example, double-sided tape, the adhesive material extends axially along the roll, and a projection of the adhesive material on the end face of the roll is at a same circumferential position as the electronic tag, that is, the double-sided tape is aligned with the electronic tag position and stuck on the roll. The double-sided tape is, for example, strip-shaped and has a first edge and a second edge, and the first edge contacts the roll material before the second edge.

[0126] The controller determines a first time for the roll to rotate from when the second reader recognizes the electronic tag to when the first edge of the adhesive material contacts the roll material. As shown in FIGS. 4A and 4B, the second reader 9 recognizes the electronic tag 7, the electronic tag 7 and the adhesive material rotate counterclockwise with the roll, and after the first time, the first edge of the adhesive material needs to adhere to the roll material.

[0127] For example, the first time for the roll to rotate is determined according to an angle by which the roll rotates from when the second reader recognizes the electronic tag to when the first edge of the adhesive material contacts the roll material, and according to a time between two adjacent recognitions of the electronic tag by the second reader. For example, a time between two adjacent recognitions of the electronic tag by the second reader is T, that is, a time for the roll to rotate one full circle is T, an angle by which the roll rotates from when the second reader recognizes the electronic tag to when the first edge of the adhesive material contacts the roll material is C, and the roll rotates 360 degrees in one full circle, then the first time is a ratio of the angle C to 360 multiplied by the time T, that is, the first time Tc=(C / 360)*T. If the roll rotates one full circle expressed by 2π, the first time Tc=(C / 2π)*T, where the angle C is also expressed in radians.

[0128] Further, the controller determines a second time for the roll to rotate from when the first edge of the adhesive material contacts the roll material to when the second edge contacts the roll material. For example, the second time is determined according to a time between two adjacent recognitions of the electronic tag by the second reader, a circumference of the roll, and width information between the first edge and the second edge of the adhesive material.

[0129] For example, a time between two adjacent recognitions of the electronic tag by the second reader is T, a circumference of the roll is D, and a width of the adhesive material is L, then the second time is a ratio of the width L to the circumference D multiplied by the time T, that is, the second time Tj=(L / D)*T.

[0130] Further, the controller determines a third time required for a pressure roller 81 of the tape splicing mechanism to move from a pressure roller starting position to a pressing position and determines a fourth time required for a cutter 82 of the tape splicing mechanism to move from a cutter starting position to a cutting position. The pressure roller starting position is a position where the pressure roller waits close to the roll, and the pressing position is a position where the pressure roller pushes the roll material to the roll. The cutter starting position is a position where the cutter waits to cut the roll material, and the cutting position is a position where the cutter cuts the roll material. For example, the third time Ty and the fourth time Tq can be determined by a caliper measurement method. FIGS. 4A and 4B show the pressure roller 81 at the starting position, FIG. 4C shows the pressure roller 81 moving to the pressing position with a swing arm mechanism 83, and FIG. 4D shows the cutter 82 moving to the cutting position with the swing arm mechanism 83.

[0131] In some embodiments, the controller controls extension and retraction of the pressure roller by controlling a cylinder action of the pressure roller and controls extension and retraction of the cutter by controlling a cylinder action of the cutter.

[0132] The controller controls extension and retraction times of the pressure roller and the cutter based on the first time, the second time, the third time, and the fourth time, so as to achieve the tape splicing operation on the roll.

[0133] In the above embodiments, by controlling the extension and retraction times of the pressure roller and the cutter, sufficient adhesion between the roll material and the adhesive material can be improved, thereby improving the success rate and quality of automatic tape splicing.

[0134] The specific timing control of the pressure roller and the cutter will be described below by taking FIG. 5 as an example.

[0135] In FIG. 5, a zero point moment T0 is a moment when the second reader recognizes the electronic tag, the first edge of the adhesive material contacts the roll material after Tc, the pressure roller is controlled to extend after a first predetermined time T1 from when the second reader recognizes the electronic tag, the cutter is controlled to extend after a second predetermined time T2 from when the second reader recognizes the electronic tag, and the pressure roller and the cutter are controlled to retract after a third predetermined time T3 from when the second reader recognizes the electronic tag.

[0136] The first predetermined time T1 is determined according to a difference between the first time and the third time, the second predetermined time is determined according to a difference between a sum of the first time and the second time and the fourth time, and the third predetermined time is determined according to a sum of the first time and the second time. For example, T1=Tc−Ty, T2=Tc+Tj−Tq, T3=Tc+Tj.

[0137] In the above embodiments, by precisely controlling the pressure roller, the roll material and the adhesive material on the roll can be sufficiently adhered, reducing the probability of tape breakage due to insecure adhesion, and by precisely controlling extension and retraction of the cutter, excessively long trailing tails of the roll material can be reduced, thereby improving tape splicing quality.

[0138] FIG. 6 is a schematic diagram of a coating control method according to one or more embodiments. This embodiment is applied to a reeling process. As shown in FIG. 7A, in a coating reeling process, an empty roll B waits for loading at a standby position, and a roll A located at a reeling station is driven to rotate by a reeling mechanism such as a reeling shaft, achieving winding of a roll material onto the roll A located at the reeling station until the roll A is full. Parallel arrows represent an incoming material direction, and an arrow above the roll A represents a rotation direction of the reeling shaft. As shown in FIG. 7B, during roll change, a rotating mechanism such as a turret rotates, driving the empty roll B to rotate from the standby position to a reeling working position, and at this time, the full roll A is located at the standby position, and arrows between the roll A and the roll B represent a rotation direction of the turret. After the roll change process is completed, as shown in FIG. 7C, a tape splicing process is performed, and the control process will be described in detail later, where upward arrows identify a movement direction of a swing arm mechanism. After the tape splicing process is completed, as shown in FIG. 7D, a reeling process is performed until the empty roll B is full, where downward arrows represent a movement direction of the swing arm mechanism. Subsequently, the turret rotates, driving the full roll to rotate to the standby position, and after the full roll is unloaded, it is sent to the next process. The coating control method will be described in detail below.

[0139] Step 610: Before a rotating mechanism performs a roll change operation, a controller acquires, through a first reader, a roll identifier of a roll carried by an electronic tag on the roll located at a standby position and sends the roll identifier to a manufacturing execution system.

[0140] For example, a roll is loaded, and after loading is completed, the empty roll rotates, an RFID read-write device recognizes an RFID tag and reads a roll ID in the RFID tag, the RFID read-write device transmits the roll ID to a PLC, and the PLC sends the roll ID to an MES. Subsequently, the PLC also controls execution of operations such as roll change or tape splicing.

[0141] Step 620: Before a reeling mechanism performs a reeling operation, the manufacturing execution system generates a roll material identifier of a roll material to be wound onto the roll and sends the roll material identifier to the controller, where the roll material identifier corresponds to the roll identifier, and the roll material is a section of coated film.

[0142] For example, after the PLC completes tape splicing control, it sends a request for generating a film roll number to the MES, and after receiving the request, the MES generates a film roll number, binds the film roll number to the roll ID, and sends the film roll number to the controller.

[0143] Step 630: The controller controls the reeling mechanism to perform the reeling operation so as to wind the roll material onto the roll.

[0144] In the above embodiments, the controller reads a roll identifier in an electronic tag through a first reader and sends the roll identifier to a manufacturing execution system, and the manufacturing execution system generates a roll material identifier, where there is a correspondence between the roll material identifier and the roll identifier. Since there is no need for manual request of a roll material identifier, but a roll material identifier is generated through interaction between the controller and the manufacturing execution system, the probability of forgetting to request or repeatedly requesting a roll material identifier is reduced.

[0145] In some embodiments of this application, the controller acquires production data related to the roll material, where the production data corresponds to the roll identifier and the roll material identifier.

[0146] For example, after the PLC receives a film roll number sent by the MES, it controls a coater to perform a reeling operation, records production data after production is completed, and sends the production data to the MES, and the MES saves a correspondence among the production data, the roll identifier, and the roll material identifier.

[0147] In a subsequent process, an RFID read-write device reads a roll identifier, and then according to the correspondence, a roll material identifier and production data are searched in the MES, improving the reliability of film roll data traceability. In addition, since there is no need to print and stick a shipping tag, the risk of film roll data loss is greatly reduced, thereby reducing the risk of equipment damage and material scrapping due to processing of an erroneous film roll in a subsequent process.

[0148] FIG. 8 is a schematic diagram of a coating control method according to one or more embodiments.

[0149] Step 810: A controller sends a first request message to a manufacturing execution system, where the first request message includes a roll identifier and a station where a roll is located.

[0150] In some embodiments, the first request message may further include a current product model to facilitate product model comparison by the MES.

[0151] In some embodiments, the PLC sends a packet T10 to the MES, and the packet T10 includes information such as a packet name, the machine number, the current product model, and a roll ID.

[0152] Step 820: The manufacturing execution system determines, according to the first request message, a first feedback result including matching information between the roll and the station where the roll is located, and sends the first feedback result to the controller.

[0153] In some embodiments, the manufacturing execution system determines a target station of the roll according to the roll identifier and determines, according to the target station of the roll and the station where the roll is located, whether the roll matches the station where the roll is located.

[0154] For example, a machine number where the roll is located is 001, and a target machine number of the roll is determined to be 002 through the roll ID, indicating that the roll does not match the station where the roll is located. If the target machine number of the roll is also 001, it indicates that the roll matches the station where the roll is located. In this embodiment, by determining whether a roll matches through the MES, abnormal rolls can be detected in a timely manner, reducing the risk of material scrapping caused by subsequent reeling work using abnormal rolls.

[0155] In some embodiments, when the roll matches a station where coating is located, the manufacturing execution system recognizes a target product model according to the roll identifier and determines whether the target product model matches the current product model.

[0156] For example, the MES recognizes through the roll ID that a product model to be produced is 1001, but a product model currently generated by the coater is 1002, indicating that the target product model does not match the current product model, thereby recognizing an abnormal product in a timely manner and reducing the probability of subsequently producing a product that does not meet requirements.

[0157] In some embodiments, after generating a feedback result, the MES feeds back a packet T20 to the PLC, and the packet T20 includes information such as a packet name, a roll ID, whether the roll belongs to this station, and a target product model.

[0158] Step 830: The controller controls the coating control system according to the first feedback result.

[0159] In this embodiment, the controller controls the coating control system according to a feedback result of the manufacturing execution system, which can improve subsequent material docking efficiency and improve equipment automation degree.

[0160] In some embodiments, when the first feedback result includes a mismatch between the roll and the station where the roll is located, the controller issues an alarm message, thereby reminding staff in a timely manner to replace the roll.

[0161] In some embodiments, when the first feedback result includes a match between the roll and the station where the roll is located, the controller controls the rotating mechanism to perform the roll change operation, improving subsequent material docking efficiency.

[0162] In some embodiments, when the first feedback result includes a match between the roll and the station where the roll is located and a mismatch between the target product model and the current product model, the controller retrieves target coating operation parameters matching the target product model, replaces coating operation parameters corresponding to the current product model with the target coating operation parameters, and controls the rotating mechanism to perform the roll change operation, thereby achieving automatic model change and automatic adjustment of equipment parameters.

[0163] In some embodiments, when the first feedback result includes a match between the roll and a station where coating is located and a match between the target product model and the current product model, the controller controls the rotating mechanism to perform the roll change operation, reducing the risk of subsequent coating operation failure due to abnormal film rolls.

[0164] FIG. 9 is a schematic diagram of a coating control method according to one or more embodiments.

[0165] Step 910: A controller, when completing a tape splicing operation on a roll, sends a second request message to a manufacturing execution system, where the second request message includes a roll identifier, a station where the roll is located, and a current product model.

[0166] In some embodiments, the PLC sends a packet T30 to the MES, and the packet T30 includes a packet name, a machine number, a current product model, and a roll ID. In this embodiment, a film roll number is requested by sending the packet T30.

[0167] Step 920: The manufacturing execution system generates a roll material identifier of a roll material according to the second request message, binds a correspondence between the roll material identifier and the roll identifier, and sends a second feedback message to the controller.

[0168] In some embodiments, the MES feeds back a packet T40 to the PLC, and the packet T40 includes a packet name, a roll ID, and film roll status information.

[0169] In the above embodiments, when tape splicing is completed, the controller actively requests a roll material identifier from the manufacturing execution system, and the manufacturing execution system binds the roll identifier and the roll material identifier, improving equipment automation degree. Moreover, since a manual process of requesting a film roll number is eliminated, the probability of forgetting to request and repeatedly requesting a roll material identifier is reduced.

[0170] In some other embodiments of this application, the controller sends acquired production data related to a roll material to a manufacturing execution system, and the manufacturing execution system binds a correspondence among the production data, a roll material identifier, and a roll identifier.

[0171] For example, the PLC sends production data to the MES, and the MES saves a correspondence among the production data, the roll material identifier, and the roll identifier, improving the reliability of film roll data traceability and reducing the risk of data loss due to human factors.

[0172] In some other embodiments of this application, a roll change process is improved. A controller controls, according to recognition of an electronic tag located at a reeling station by a second reader, a tape splicing mechanism to perform a tape splicing operation on a roll.

[0173] In this embodiment, an electronic tag is used instead of a color mark, and a second reader is used instead of a color mark sensor to control the tape splicing mechanism to perform tape splicing control on the roll, which can reduce tape splicing failure problems caused by abnormal situations such as color mark contamination causing sensing failure of the color mark sensor.

[0174] In some embodiments, the roll is positioned according to recognition of the electronic tag by the second reader, and the tape splicing mechanism is controlled, based on positioning information of the roll, to perform the tape splicing operation on the roll. In this embodiment, using an arrival signal of the electronic tag for roll positioning and tape splicing control can improve control efficiency.

[0175] FIG. 10 is a schematic diagram of a coating control method according to one or more embodiments.

[0176] Step 1010: Determine a first time for a roll to rotate from when a second reader recognizes an electronic tag to when a first edge of an adhesive material contacts a roll material.

[0177] In some embodiments, the first time for the roll to rotate is determined according to an angle by which the roll rotates from when the second reader recognizes the electronic tag to when the first edge of the adhesive material contacts the roll material, and according to a time between two adjacent recognitions of the electronic tag by the second reader.

[0178] Step 1020: Determine a second time for the roll to rotate from when the first edge of the adhesive material contacts the roll material to when a second edge contacts the roll material, where the first edge contacts the roll material before the second edge.

[0179] In some embodiments, the second time is determined according to a time between two adjacent recognitions of the electronic tag by the second reader, a circumference of the roll, and width information between the first edge and the second edge of the adhesive material.

[0180] Step 1030: Determine a third time required for a pressure roller of a tape splicing mechanism to move from a pressure roller starting position to a pressing position.

[0181] For example, the time required for the pressure roller to move from the pressure roller starting position to the pressing position is determined by caliper measurement.

[0182] Step 1040: Determine a fourth time required for a cutter of the tape splicing mechanism to move from a cutter starting position to a cutting position.

[0183] For example, the time required for the cutter to move from the cutter starting position to the cutting position is determined by caliper measurement.

[0184] Step 1050: Control extension and retraction times of the pressure roller and the cutter based on the first time, the second time, the third time, and the fourth time, so as to achieve tape splicing control on the roll.

[0185] In some embodiments, a first predetermined time from when the second reader recognizes the electronic tag to when the pressure roller extends is determined according to a difference between the first time and the third time.

[0186] A second predetermined time from when the second reader recognizes the electronic tag to when the cutter extends is determined according to a difference between a sum of the first time and the second time and the fourth time.

[0187] A third predetermined time from when the second reader recognizes the electronic tag to when the pressure roller and the cutter are controlled to retract is determined according to a sum of the first time and the second time.

[0188] In the above embodiments, a signal for detecting an electronic tag is used to achieve tape splicing control, which improves adhesion tightness between a roll material and an adhesive material, and can reduce trailing tails of the roll material, improving the success rate and quality of automatic tape splicing.

[0189] A reeling process of this application will be described below by taking a specific embodiment as an example, as shown in FIG. 11.

[0190] Step 1110: A PLC controls roll loading. The roll is provided with an RFID tag, the RFID tag carrying a roll ID.

[0191] Step 1120: After loading is completed, the PLC controls an empty roll to rotate.

[0192] Step 1130: A first RFID read-write device recognizes the RFID tag and reads the roll ID in the RFID tag.

[0193] Step 1140: The PLC sends the roll ID, a machine number, and a current product model to an MES. For example, a message is sent through a packet T10.

[0194] Step 1150: The MES determines whether a target machine number of the roll matches a current machine number, and if they match, step 1160 is performed; otherwise, step 1170 is performed.

[0195] Step 1160: The MES determines whether the current product model matches a target product model, and if they match, step 1161 is performed; otherwise, step 1162 is performed.

[0196] Step 1161: The MES marks the roll as a correct roll.

[0197] Step 1162: The MES marks the roll as a model-change roll.

[0198] Step 1170: The MES marks the roll as an abnormal roll.

[0199] Step 1180: The MES feeds back a judgment result to the PLC. For example, a message is sent through a packet T20.

[0200] Step 1190: When the MES feeds back success, the PLC recognizes the feedback result.

[0201] Step 11100: When the feedback result is that the roll is an abnormal roll, the PLC outputs an alarm message, for example, outputs a voice prompt or text prompt of “please replace with a correct roll”.

[0202] Step 11110: When the feedback result is that the roll is a model-change roll, the PLC retrieves target model parameters.

[0203] Step 11120: The PLC replaces current model parameters with the target model parameters.

[0204] Step 11130: Equipment model change is performed.

[0205] Step 11131: After a model change action is completed, equipment readiness is prompted, and step 11140 is subsequently performed.

[0206] Step 11140: When the feedback result is that the roll is a correct roll, the PLC waits for roll change startup.

[0207] Step 11141: The PLC controls a roll change operation.

[0208] Step 11150: After a roll change action is completed, the PLC controls execution of a roll tape splicing action.

[0209] Step 11160: After the roll tape splicing action is completed, the PLC sends a request for acquiring a film roll number to the MES. For example, a message is sent through a packet T30.

[0210] Step 11170: The MES generates a film roll number.

[0211] Step 11180: The MES binds the film roll number to a roll ID and stops recording data to the previous film roll number.

[0212] Step 11190: The MES feeds back to the PLC to transmit the film roll number to the PLC. For example, a message is sent through a packet T40.

[0213] Step 11200: The PLC acquires production data and sends the production data to the MES.

[0214] Step 11210: The MES binds the production data to the film roll number.

[0215] In the above embodiments, manual request of film roll information and sticking of a shipping tag, and other steps are eliminated, but a PLC automatically requests a film roll number from an MES, and the MES binds a correspondence between production data and a film roll number, improving the reliability of film roll information traceability. In addition, through recognition of roll information, automatic model change and automatic adjustment of equipment parameters as well as automatic processing of abnormal rolls or film rolls are achieved, reducing labor costs and improving equipment automation degree and flexible processing capability.

[0216] Those skilled in the art can understand that in the above method of the specific embodiments, a writing order of various steps does not mean a strict execution order and does not constitute any limitation on an implementation process, and a specific execution order of various steps should be determined by their functions and possible internal logic.

[0217] The above descriptions of various embodiments tend to emphasize differences between various embodiments, and the same or similar parts thereof can be referred to each other. For brevity, details are not repeated herein.

[0218] So far, this application has been described in detail. To avoid obscuring the concept of this application, some details known in the art are not described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein according to the above description.

[0219] The method and system of this application may be implemented in many ways. For example, the method and system of this application may be implemented by software, hardware, firmware, or any combination of software, hardware, and firmware. The above order of steps of the method is only for illustration, and the steps of the method of this application are not limited to the order specifically described above unless otherwise specifically stated. In addition, in some embodiments, this application may also be implemented as a program recorded in a recording medium, and these programs include machine-readable instructions for implementing the method according to this application. Therefore, this application also covers a recording medium storing a program for executing the method according to this application.

[0220] Although some specific embodiments of this application have been described in detail by examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of this application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of this application. The scope of this application is defined by the appended claims.

Examples

Embodiment Construction

[0056]The embodiments of this application will be further described in detail below with reference to the accompanying drawings and embodiments. The detailed description and drawings of the following embodiments are used to exemplarily illustrate the principles of this application, but cannot be used to limit the scope of this application, that is, this application is not limited to the described embodiments.

[0057]In the description of this application, it should be noted that, unless otherwise stated, “multiple” means two or more; and the orientations or positional relationships indicated by the terms “upper”, “lower”, “left”, “right”, “inner”, “outer”, and the like are only for convenience of describing this application and simplifying the description, and do not indicate or imply that the referred means or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addi...

CROSS-REFERENCE TO RELATED APPLICATIONS

[0001] This application is a bypass continuation of International Application No. PCT / CN2024 / 142415 filed on Dec. 25, 2024, and claims priority to the Chinese patent application entitled “COATING CONTROL SYSTEM AND COATING CONTROL METHOD” filed on Jan. 2, 2024 (Application No.: 202410002283.7), the entire contents of each are incorporated herein by reference.TECHNICAL FIELD

[0002] This application relates to the field of control, and in particular to a coating control system and a coating control method.BACKGROUND

[0003] Coating equipment production involves coating cathode and anode electrode materials onto a current collector. The current collector is fed in roll form, unreeled and unfolded by an unreeling shaft, and then subjected to processes such as slurry coating, drying, and inspection, after which it is reeled by a reeling shaft.

[0004] In the related art, to achieve traceability of production data, during the reeling process, a roll located at a standby position requests the film roll number for that roll material from an MES (Manufacturing Execution System, Manufacturing Execution System) through manual triggering during loading, but there are cases where the request for the film roll number is forgotten.

[0005] The above statements are provided only to furnish background information related to this application and do not necessarily constitute prior art.SUMMARY

[0006] A technical problem to be solved by this application is to provide a coating control system and a coating control method, so as to automatically acquire a roll material identifier, thus reducing cases where the roll material identifier cannot be acquired.

[0007] In a first aspect, this application provides a coating control system, including: a rotating mechanism configured to perform a roll change operation so as to rotate a roll located at a standby position to a reeling station, where the roll is provided with an electronic tag, and the electronic tag carries a roll identifier of the roll; a reeling mechanism configured to perform a reeling operation so as to wind a roll material onto the roll at the reeling station, where the roll material is a section of coated film; a first reader disposed at the standby position and configured to read the electronic tag provided on the roll located at the standby position; a controller electrically connected to the first reader and configured to acquire the roll identifier from the first reader before the rotating mechanism performs the roll change operation and to send the roll identifier to a manufacturing execution system; and the manufacturing execution system electrically connected to the controller and configured to generate a roll material identifier corresponding to the roll material before the reeling mechanism performs the reeling operation, where the roll identifier corresponds to the roll material identifier.

[0008] In the technical solution of the embodiments of this application, by providing an electronic tag and a reader, the reader reads the roll identifier in the electronic tag, the controller then sends the roll identifier to the manufacturing execution system, and the manufacturing execution system generates a roll material identifier corresponding to the roll material, where the roll material identifier corresponds to the roll identifier, thereby achieving automatic acquisition of the roll material identifier, eliminating the manual process of requesting a film roll number, and thus reducing the probability of failing to acquire the roll material identifier.

[0009] In some embodiments, the electronic tag is located on an end face of the roll; and the first reader is disposed on a frame at the standby position, and when the roll is at the standby position, the electronic tag is within a reading range of the first reader. By specifying the positions of the electronic tag and the first reader, acquisition of the content of the electronic tag can be achieved, improving the efficiency of acquiring the roll identifier.

[0010] In some embodiments, the controller is further configured to acquire production data related to the roll material, where the production data corresponds to the roll identifier and the roll material identifier. As the production data corresponds to the roll identifier and the roll material identifier, the reliability of film roll data traceability is improved.

[0011] In some embodiments, the controller is further configured to send a first request message to the manufacturing execution system, where the first request message includes the roll identifier and a station where the roll is located; and the manufacturing execution system is further configured to determine, according to the first request message, a first feedback result including matching information between the roll and the station where the roll is located, and to send the first feedback result to the controller so that the controller controls the coating control system according to the first feedback result. Through interaction between the controller and the manufacturing execution system, abnormal rolls can be detected in a timely manner, reducing the probability of coating failure caused by subsequent use of abnormal rolls.

[0012] In some embodiments, the controller is further configured to control, when the first feedback result includes a match between the roll and the station where the roll is located, the rotating mechanism to perform the roll change operation. The roll change operation is performed only when the roll matches the station where the roll is located, improving subsequent material docking efficiency.

[0013] In some embodiments, the manufacturing execution system is further configured to determine a target station of the roll according to the roll identifier, and to determine, according to the target station of the roll and the station where the roll is located, whether the roll matches the station where the roll is located. By determining the target station of the roll based on roll information and then determining whether the roll matches the station where it is located, subsequent invalid operations of coating control due to mismatch can be reduced.

[0014] In some embodiments, the first request message further includes a current product model, and the first feedback result further includes matching information between a target product model and the current product model, where the controller is further configured to retrieve, when the first feedback result includes a match between the roll and the station where the roll is located and a mismatch between the target product model and the current product model, target coating operation parameters matching the target product model, replace coating operation parameters corresponding to the current product model with the target coating operation parameters, and control the rotating mechanism to perform the roll change operation. When the target product model does not match the current product model, automatically adjusting the coating operation parameters can improve the accuracy of subsequent coating processing.

[0015] In some embodiments, the coating control system further includes: a tape splicing mechanism disposed at the reeling station and configured to perform a tape splicing operation on the roll; and a second reader disposed at the reeling station and configured to read the electronic tag provided on the roll located at the reeling station; where the controller is further configured to control, according to recognition of the electronic tag by the second reader, the tape splicing mechanism to perform the tape splicing operation on the roll. By recognizing the electronic tag with the second reader to achieve the tape splicing operation on the roll, the problem of low tape splicing control accuracy due to sensing failure can be reduced.

[0016] In some embodiments, the second reader is disposed on a frame at the reeling station, and when the roll is at the reeling station, the electronic tag is within a reading range of the second reader. By describing the positions of the electronic tag and the second reader, the accuracy of signal recognition can be improved.

[0017] In some embodiments, the controller is further configured to: position the roll according to recognition of the electronic tag by the second reader; and control, based on positioning information of the roll, the tape splicing mechanism to perform the tape splicing operation on the roll. Using an arrival signal of the electronic tag for roll positioning and tape splicing control improves control accuracy and reduces the risk of tape splicing failure due to contamination or lighting issues.

[0018] In some embodiments, an adhesive material is further provided on a side face of the roll, the adhesive material extends axially along the roll, and a projection of the adhesive material on the end face of the roll is at a same circumferential position as the electronic tag, where the controller is further configured to: determine a first time for the roll to rotate from when the second reader recognizes the electronic tag to when a first edge of the adhesive material contacts the roll material; determine a second time for the roll to rotate from when the first edge of the adhesive material contacts the roll material to when a second edge contacts the roll material, where the first edge contacts the roll material before the second edge; determine a third time required for a pressure roller of the tape splicing mechanism to move from a pressure roller starting position to a pressing position; determine a fourth time required for a cutter of the tape splicing mechanism to move from a cutter starting position to a cutting position; and control extension and retraction times of the pressure roller and the cutter based on the first time, the second time, the third time, and the fourth time, so as to achieve the tape splicing operation on the roll. By using recognition and rotation of the electronic tag to control the extension and retraction times of the pressure roller and the cutter, the tightness between the roll material and the adhesive material can be improved, and the problem of excessively long trailing tails can be reduced, thereby improving tape splicing efficiency and tape splicing quality.

[0019] In some embodiments, the electronic tag includes a radio frequency identification RFID tag, and the first reader includes an RFID read-write device; or the electronic tag includes a near field communication NFC card, and the first reader includes an NFC card reader; or the electronic tag includes a two-dimensional code, and the first reader includes a two-dimensional code recognizer.

[0020] In a second aspect, this application provides a coating control method, including: before a rotating mechanism performs a roll change operation, acquiring, by a controller through a first reader, a roll identifier carried by an electronic tag on a roll located at a standby position, and sending the roll identifier to a manufacturing execution system; before a reeling mechanism performs a reeling operation, generating, by the manufacturing execution system, a roll material identifier of a roll material to be wound onto the roll, and sending the roll material identifier to the controller, where the roll material identifier corresponds to the roll identifier, and the roll material is a section of coated film; and controlling, by the controller, the reeling mechanism to perform the reeling operation so as to wind the roll material onto the roll.

[0021] In the technical solution of the embodiments of this application, by providing an electronic tag and a reader, the reader reads the roll identifier in the electronic tag, the controller then sends the roll identifier to the manufacturing execution system, and the manufacturing execution system generates a roll material identifier corresponding to the roll material, where the roll material identifier corresponds to the roll identifier, thereby achieving automatic acquisition of the roll material identifier, eliminating the manual process of requesting a film roll number, and thus reducing the probability of failing to acquire the roll material identifier.

[0022] In some embodiments, the controller acquires production data related to the roll material, where the production data corresponds to the roll identifier and the roll material identifier. As the production data corresponds to the roll identifier and the roll material identifier, the reliability of film roll data traceability is improved.

[0023] In some embodiments, the controller sends a first request message to the manufacturing execution system, where the first request message includes the roll identifier and a station where the roll is located; the manufacturing execution system determines, according to the first request message, a first feedback result including matching information between the roll and the station where the roll is located, and sends the first feedback result to the controller; and the controller controls the coating control system according to the first feedback result. Through interaction between the controller and the manufacturing execution system, abnormal rolls can be detected in a timely manner, reducing the probability of coating failure caused by subsequent use of abnormal rolls.

[0024] In some embodiments, the step of the controller controlling the coating control system according to the first feedback result includes: when the first feedback result includes a match between the roll and the station where the roll is located, controlling, by the controller, the rotating mechanism to perform the roll change operation. The roll change operation is performed only when the roll matches the station where the roll is located, improving subsequent material docking efficiency.

[0025] In some embodiments, the step of the manufacturing execution system determining, according to the first request message, the first feedback result including matching information between the roll and the station where the roll is located includes: determining, by the manufacturing execution system, a target station of the roll according to the roll identifier, and determining, according to the target station of the roll and the station where the roll is located, whether the roll matches the station where the roll is located. By determining the target station of the roll based on roll information and then determining whether the roll matches the station where it is located, subsequent invalid operations of coating control due to mismatch can be reduced.

[0026] In some embodiments, the first request message further includes a current product model, and the first feedback result further includes matching information between a target product model and the current product model, where the step of the controller controlling the coating control system according to the first feedback result includes: when the first feedback result includes a match between the roll and the station where the roll is located and a mismatch between the target product model and the current product model, retrieving, by the controller, target coating operation parameters matching the target product model, replacing coating operation parameters corresponding to the current product model with the target coating operation parameters, and controlling the rotating mechanism to perform the roll change operation. When the target product model does not match the current product model, automatically adjusting the coating operation parameters can improve the accuracy of subsequent coating processing.

[0027] In some embodiments, the controller, when completing a tape splicing operation on the roll, sends a second request message to the manufacturing execution system, where the second request message includes the roll identifier, the station where the roll is located, and a current product model; and the manufacturing execution system generates a roll material identifier of the roll material according to the second request message, binds a correspondence between the roll material identifier and the roll identifier, and sends a second feedback message to the controller. Since the manual process of requesting a film roll number is eliminated, the probability of forgetting to request or repeatedly requesting a roll material identifier is reduced.

[0028] In some embodiments, the controller sends the acquired production data related to the roll material to the manufacturing execution system; and the manufacturing execution system binds a correspondence among the production data, the roll material identifier, and the roll identifier. The reliability of film roll data traceability is improved, and the risk of data loss due to human factors is reduced.

[0029] In some embodiments, the second feedback message includes the roll identifier and roll material status information. This helps operators to grasp the roll material status information in a timely manner.

[0030] In some embodiments, the controller controls, according to recognition of the electronic tag located at the reeling station by a second reader, a tape splicing mechanism to perform a tape splicing operation on the roll. By recognizing the electronic tag with the second reader to achieve the tape splicing operation on the roll, the problem of low tape splicing control accuracy due to sensing failure can be reduced.

[0031] In some embodiments, the step of the controller controlling, according to recognition of the electronic tag located at the reeling station by the second reader, the tape splicing mechanism to perform the tape splicing operation on the roll includes: positioning the roll according to the recognition of the electronic tag by the second reader; and controlling, based on positioning information of the roll, the tape splicing mechanism to perform the tape splicing operation on the roll. Using an arrival signal of the electronic tag for roll positioning and tape splicing control improves control accuracy and reduces the risk of tape splicing failure due to contamination or lighting issues.

[0032] In some embodiments, the electronic tag is located on an end face of the roll, the second reader is located on a frame at the reeling station, and when the roll is at the reeling station, the electronic tag is within a reading range of the second reader, where an adhesive material is located on a side face of the roll and extends axially along the roll, and a projection of the adhesive material on the end face of the roll is at a same circumferential position as the electronic tag, where the step of the controller controlling the tape splicing mechanism to perform the tape splicing operation on the roll includes: determining, by a controller, a first time for the roll to rotate from when the second reader recognizes the electronic tag to when a first edge of the adhesive material contacts the roll material; determining, by the controller, a second time for the roll to rotate from when the first edge of the adhesive material contacts the roll material to when a second edge contacts the roll material, where the first edge contacts the roll material before the second edge; determining a third time required for a pressure roller of the tape splicing mechanism to move from a pressure roller starting position to a pressing position; determining a fourth time required for a cutter of the tape splicing mechanism to move from a cutter starting position to a cutting position; and controlling, by the controller, extension and retraction times of the pressure roller and the cutter based on the first time, the second time, the third time, and the fourth time, so as to achieve tape splicing control on the roll. By using recognition and rotation of the electronic tag to control the extension and retraction times of the pressure roller and the cutter, the tightness between the roll material and the adhesive material can be improved, and the problem of excessively long trailing tails can be reduced, thereby improving tape splicing efficiency and tape splicing quality.

[0033] In some embodiments, the determining, by a controller, a first time for the roll to rotate includes: determining the first time for the roll to rotate according to an angle by which the roll rotates from when the second reader recognizes the electronic tag to when the first edge of the adhesive material contacts the roll material, and according to a time between two adjacent recognitions of the electronic tag by the second reader. By converting the angle and the time taken for the electronic tag to rotate one full circle, the first time can be obtained, facilitating subsequent determination of the extension and retraction times of the pressure roller and the cutter.

[0034] In some embodiments, the determining, by the controller, a second time for the roll to rotate includes: determining the second time according to a time between two adjacent recognitions of the electronic tag by the second reader, a circumference of the roll, and width information between the first edge and the second edge of the adhesive material. By using the time taken for the electronic tag to rotate one full circle, the circumference of the roll, and the width of the adhesive material, the second time can be obtained, facilitating subsequent determination of the extension and retraction times of the pressure roller and the cutter.

[0035] In some embodiments, the controlling, by the controller, extension and retraction times of the pressure roller and the cutter includes: after the second reader recognizes the electronic tag, controlling the pressure roller to extend after a first predetermined time, where the first predetermined time is determined according to a difference between the first time and the third time; after the second reader recognizes the electronic tag, controlling the cutter to extend after a second predetermined time, where the second predetermined time is determined according to a difference between a sum of the first time and the second time and the fourth time; and after the second reader recognizes the electronic tag, controlling the pressure roller and the cutter to retract after a third predetermined time, where the third predetermined time is determined according to a sum of the first time and the second time. By precisely controlling the extension and retraction times of the pressure roller and the cutter, the adhesion between the roll material and the adhesive material on the roll can be improved, and excessively long trailing tails can be reduced, thereby improving tape splicing quality and efficiency.

[0036] Other features and advantages of this application will become apparent from the following detailed description of exemplary embodiments of this application with reference to the accompanying drawings.BRIEF DESCRIPTION OF DRAWINGS

[0037] To explain the technical solutions of the embodiments of this application more clearly, the drawings required in the embodiments of this application will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of this application, and those of ordinary skill in the art can obtain other drawings according to these drawings without creative efforts.

[0038] FIG. 1 is a schematic diagram of a coating control system according to one or more embodiments;

[0039] FIG. 2A is a schematic diagram of positions of an electronic tag and a reader according to one or more embodiments;

[0040] FIG. 2B is a schematic diagram of positions of an electronic tag and a reader according to one or more embodiments;

[0041] FIG. 3 is a schematic diagram of a coating control system according to one or more embodiments;

[0042] FIG. 4A is a schematic diagram of a tape splicing process according to one or more embodiments;

[0043] FIG. 4B is a schematic diagram of a tape splicing process according to one or more embodiments;

[0044] FIG. 4C is a schematic diagram of a tape splicing process according to one or more embodiments;

[0045] FIG. 4D is a schematic diagram of a tape splicing process according to one or more embodiments;

[0046] FIG. 5 is a schematic timing diagram of tape splicing by a tape splicing mechanism according to one or more embodiments;

[0047] FIG. 6 is a schematic diagram of a coating control method according to one or more embodiments;

[0048] FIG. 7A is a schematic diagram of loading an empty roll during a reeling process according to one or more embodiments;

[0049] FIG. 7B is a schematic diagram of roll change during a reeling process according to one or more embodiments;

[0050] FIG. 7C is a schematic diagram of tape splicing during a reeling process according to one or more embodiments;

[0051] FIG. 7D is a schematic diagram of reeling during a reeling process according to one or more embodiments;

[0052] FIG. 8 is a schematic diagram of a coating control method according to one or more embodiments;

[0053] FIG. 9 is a schematic diagram of a coating control method according to one or more embodiments;

[0054] FIG. 10 is a schematic diagram of a coating control method according to one or more embodiments; and

[0055] FIG. 11 is a schematic diagram of a coating control method according to one or more embodiments.DESCRIPTION OF EMBODIMENTS

[0056] The embodiments of this application will be further described in detail below with reference to the accompanying drawings and embodiments. The detailed description and drawings of the following embodiments are used to exemplarily illustrate the principles of this application, but cannot be used to limit the scope of this application, that is, this application is not limited to the described embodiments.

[0057] In the description of this application, it should be noted that, unless otherwise stated, “multiple” means two or more; and the orientations or positional relationships indicated by the terms “upper”, “lower”, “left”, “right”, “inner”, “outer”, and the like are only for convenience of describing this application and simplifying the description, and do not indicate or imply that the referred means or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addition, the terms “first”, “second”, “third”, and the like are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. “Vertical” is not strictly vertical but within an allowable error range. “Parallel” is not strictly parallel but within an allowable error range.

[0058] At the same time, it should be understood that, for convenience of description, the dimensions of various parts shown in the drawings are not drawn according to actual proportional relationships.

[0059] The following description of at least one exemplary embodiment is actually merely illustrative and in no way serves as any limitation on this application and its application or use.

[0060] Techniques, methods, and devices known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods, and devices should be considered as part of the description.

[0061] In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0062] It should be noted that similar reference numerals and letters represent similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0063] To make the objectives, technical solutions, and advantages of this application clearer, this application will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0064] In the related art, a coating reeling process includes an empty roll waiting for loading at a standby position, a turret rotating to drive the empty roll to rotate to a working position, and then performing tape splicing and reeling control. After the roll is full, the turret rotates to drive the full roll to rotate to the standby position, and after the full roll is unloaded at the standby position, it is sent to the next process. To achieve traceability of film roll generation data, the film roll number of a roll material needs to be acquired through manual triggering, but there are cases where the request for the film roll number is forgotten.

[0065] In the embodiments of this application, by providing an electronic tag and a reader, recognition of a roll identifier is achieved, and then a roll material identifier corresponding to a roll material on the roll is generated, so that the roll, the roll material, the roll identifier, and the roll material identifier have a correspondence. Automatic acquisition through the roll material identifier can reduce the probability of failing to acquire film roll information due to human forgetting.

[0066] FIG. 1 is a schematic diagram of a coating control system according to one or more embodiments. The coating control system includes a rotating mechanism 1, a reeling mechanism 2, a first reader 3, a controller 4, and a manufacturing execution system 5.

[0067] The rotating mechanism 1 is configured to perform a roll change operation so as to rotate a roll 6 located at a standby position to a reeling station, where the roll is provided with an electronic tag 7, and the electronic tag carries a roll identifier of the roll.

[0068] In some embodiments, the rotating mechanism 1 is, for example, a turret. The turret drives the roll to rotate from the standby position to the reeling station so as to achieve tape splicing and reeling operations on the roll at the reeling station.

[0069] In some embodiments, the electronic tag is, for example, an RFID (Radio Frequency Identification, Radio Frequency Identification) tag, and the RFID tag has advantages such as waterproofness, antimagnetism, high temperature resistance, long service life, encryptable data on the tag, larger data storage capacity, and freely changeable stored information.

[0070] The RFID tag carries a roll identifier of the roll, and the roll identifier is, for example, a roll ID (Identity document, Identity document) number, and the ID number is a unique identification code of the roll.

[0071] In some embodiments, the electronic tag is, for example, an NFC (Near Field Communication, Near Field Communication) card, and the NFC card has safe and convenient attributes. The NFC tag can carry a roll identifier of the roll.

[0072] In some embodiments, the electronic tag is, for example, a two-dimensional code, and the two-dimensional code has characteristics of low cost and strong universality and can carry a roll identifier of the roll.

[0073] The reeling mechanism 2 is configured to perform a reeling operation so as to wind a roll material onto the roll 6 at the reeling station, where the roll material is a section of coated film. In some embodiments, the reeling mechanism 2 includes a reeling shaft, and rotation of the reeling shaft drives the roll material to be wound onto the roll.

[0074] The first reader 3 is disposed at the standby position and configured to read the electronic tag 7 provided on the roll 6 located at the standby position.

[0075] In some embodiments, when the electronic tag is an RFID tag, the first reader includes an RFID read-write device capable of reading a roll identifier carried by the RFID tag.

[0076] In some embodiments, when the electronic tag is an NFC card, the first reader includes an NFC card reader, and the NFC card reader is capable of reading a roll identifier carried by the NFC card.

[0077] In some embodiments, when the electronic tag is a two-dimensional code, the first reader includes a two-dimensional code recognizer, and the two-dimensional code recognizer is capable of reading a roll identifier carried by the two-dimensional code.

[0078] The controller 4 is electrically connected to the first reader 3 and is configured to acquire the roll identifier from the first reader 3 before the rotating mechanism 1 performs the roll change operation and to send the roll identifier to the manufacturing execution system 5.

[0079] In some embodiments, the controller is, for example, a PLC (Programmable Logic Controller, Programmable Logic Controller). The PLC can acquire a roll ID from the first reader. For example, after the first reader reads the roll ID, it sends the roll ID to the PLC. Those skilled in the art should understand that the PLC here is only for illustration, and the function of the controller can also be achieved by a structure composed of an integrated circuit, related components, and the like.

[0080] The manufacturing execution system 5 is electrically connected to the controller 4 and is configured to generate a roll material identifier corresponding to the roll material before the reeling mechanism 2 performs the reeling operation, where the roll identifier corresponds to the roll material identifier.

[0081] In some embodiments, the roll material identifier is information for identifying the roll material, that is, an identification number of the roll material, for example, a film roll number of the roll material.

[0082] In some embodiments, the MES determines whether the roll is available, and if the roll is available, generates a film roll number and binds the film roll number to the roll identifier, thereby achieving binding between the film roll number and the roll.

[0083] In some embodiments, the MES stores a correspondence between roll material identifiers and roll identifiers to obtain related information of the roll material through the correspondence during subsequent traceability of materials.

[0084] In some embodiments, after generating a roll material identifier corresponding to the roll material, the MES outputs the roll material identifier and the roll identifier to an external memory, and the memory stores the correspondence between the roll material identifier and the roll identifier, which can reduce the storage space of the MES itself.

[0085] In the above embodiments, by providing an electronic tag carrying a roll identifier on a roll, a first reader reads the roll identifier carried by the electronic tag and sends it to a manufacturing execution system through a controller, and the manufacturing execution system generates a roll material identifier of a roll material corresponding to the roll identifier, thereby achieving automatic acquisition of the roll material identifier. Since there is no need for a human request process to acquire the roll material identifier, the probability of failing to acquire the roll material identifier is reduced.

[0086] In some embodiments, one roll identifier corresponds to one roll material identifier, which can also reduce the case where multiple roll material identifiers are repeatedly requested, resulting in subsequent production data being unable to determine which roll material identifier to match.

[0087] In some embodiments of this application, as shown in FIGS. 2A and 2B, the electronic tag 7 is located on an end face of the roll 6. Since a roll material 61 is wound around the roll 6, providing the electronic tag on the end face of the roll facilitates more convenient and faster recognition of the electronic tag by the first reader.

[0088] The first reader 3 is disposed on a frame 31 at the standby position of a coater, and when the roll is at the standby position, the electronic tag is within a reading range of the first reader. The frame has a certain distance from the roll. Providing the electronic tag on the end face of the roll and providing the first reader on the frame make installation more convenient compared to providing it at other positions.

[0089] In this embodiment, since the electronic tag is within the reading range of the first reader, the first reader can accurately and quickly recognize a roll ID in the electronic tag. In addition, manual triggering to request a film roll number may cause repeated requests, while in this embodiment, by providing an electronic tag and a reader, the subsequent manual process of requesting a film roll number can be eliminated, thereby also reducing the probability of repeatedly requesting a film roll number.

[0090] In some other embodiments of this application, the controller 4 is further configured to acquire production data related to the roll material, where the production data corresponds to the roll identifier and the roll material identifier.

[0091] During production of the roll material, there are some processing parameters, such as weight data or drying data, to facilitate subsequent quality traceability, so production data needs to be saved.

[0092] For example, after production is completed, the PLC sends the production data to the MES, and the MES saves a correspondence among the production data, the roll identifier, and the roll material identifier. In the next process, a reader acquires the roll identifier, and then according to the correspondence, a roll material identifier and production data corresponding to the roll identifier are searched, thereby improving the reliability of film roll data traceability and reducing the risk of data loss due to human factors.

[0093] In some embodiments, the next process includes, for example, rolling and cutting, for example, rolling the roll material into a material with uniform thickness according to the production data, and then performing a cutting operation to delete invalid materials.

[0094] For another example, the PLC sends the production data to another external memory, and the memory stores a correspondence among the production data, the roll identifier, and the roll material identifier. When it is necessary to trace roll material data, a reader acquires the roll identifier, and then corresponding roll material identifier and production data are called from the memory, which not only improves the reliability of film roll data traceability but also reduces the storage space pressure of the MES.

[0095] In addition, in the above embodiments, since the production data corresponds to the roll identifier and the roll material identifier, there is no need to print a paper shipping tag and stick it on a film roll, reducing the risk of film roll data loss due to insecure sticking of the shipping tag or falling off of the shipping tag.

[0096] In some embodiments of this application, the controller 4 is further configured to send a first request message to the manufacturing execution system 5, where the first request message includes the roll identifier and a station where the roll is located; the manufacturing execution system 5 is further configured to determine, according to the first request message, a first feedback result including matching information between the roll and the station where the roll is located, and to send the first feedback result to the controller 4 so that the controller 4 controls the coating control system according to the first feedback result.

[0097] In this embodiment, through interaction between the controller and the manufacturing execution system, the manufacturing execution system determines matching information between the roll and the station and feeds the matching information back to the controller, and the controller performs coating control according to the matching information, which can improve a material docking process of coating and subsequent processes, improve docking efficiency, and reduce labor costs caused by manual judgment.

[0098] In some embodiments, the manufacturing execution system 5 is further configured to determine a target station of the roll according to the roll identifier, and to determine, according to the target station of the roll and the station where the roll is located, whether the roll matches the station where the roll is located.

[0099] For example, when an empty roll is loaded at the standby position, the PLC sends a roll ID and station information to the MES, and the MES determines whether a target station of the roll matches the station where the roll is located. If the target station of the roll matches the station where the roll is located, it indicates that the roll is a correct roll. If the target station of the roll does not match the station where the roll is located, it indicates that the roll is an abnormal roll. Through automatic recognition of abnormal rolls, labor costs for recognition can be reduced, and timely recognition of abnormal rolls can reduce the probability of errors in subsequent processes.

[0100] In some embodiments, the station information is, for example, a machine number.

[0101] In some embodiments, the controller 4 is further configured to issue an alarm message when the first feedback result includes a mismatch between the roll and the station where the roll is located.

[0102] For example, when the MES recognizes that the roll is an abnormal roll, it feeds back station information of the roll to the PLC, and the PLC outputs an alarm message, for example, outputs a prompt of “please replace with a correct roll”, which helps operators to replace equipment in a timely manner and reduces the risk of equipment damage or material scrapping caused by subsequent erroneous processes such as roll change and roll reeling of an erroneous roll.

[0103] In some embodiments, the controller 4 is further configured to control, when the first feedback result includes a match between the roll and the station where the roll is located, the rotating mechanism to perform the roll change operation.

[0104] For example, when the manufacturing execution system recognizes that a target station of the roll matches the station where the roll is located, it feeds back station information of the roll to the PLC, and the PLC determines that the roll is a correct roll and then waits for a roll change operation, providing a basis for execution of subsequent correct processes.

[0105] In some embodiments of this application, the controller 4 is further configured to send a first request message to the manufacturing execution system 5, where the first request message includes the roll identifier, a station where the roll is located, and a current product model. The manufacturing execution system 5 is further configured to determine, according to the first request message, a first feedback result including matching information between the roll and the station where the roll is located and matching information between a target product model and the current product model, and to send the first feedback result to the controller 4 so that the controller 4 controls the coating control system according to the first feedback result.

[0106] In this embodiment, by recognizing roll information, flexible control such as automatic model change of equipment and automatic processing of abnormal rolls can be achieved, thereby improving a material docking process of coating and subsequent processes and improving docking efficiency.

[0107] In some embodiments, the manufacturing execution system 5 is further configured to, when the roll matches the station where the roll is located, recognize a target product model according to the roll identifier and determine whether the target product model matches the current product model.

[0108] For example, the PLC sends a roll ID, station information, and a current product model to the MES, and the MES determines whether a target station of the roll matches the station where the roll is located. If the target station of the roll matches the station where the roll is located, it further determines whether a target product model corresponding to the roll matches the current product model. This embodiment achieves acquisition of product information produced by a coater. When the target product model corresponding to the roll matches the current product model, the roll is marked as a correct roll. When the target product model corresponding to the roll does not match the current product model, the roll is marked as a model-change roll, that is, the model of the equipment needs to be changed, facilitating subsequent automatic model change and equipment parameter adjustment through the PLC.

[0109] In some embodiments, the controller 4 is further configured to retrieve, when the first feedback result includes a match between the roll and the station where the roll is located and a mismatch between the target product model and the current product model, target coating operation parameters matching the target product model, replace coating operation parameters corresponding to the current product model with the target coating operation parameters, and control the rotating mechanism to perform a roll change operation.

[0110] For example, when the PLC recognizes that the roll is marked as a model-change roll, it retrieves target coating operation parameters matching a target product model, performs parameter switching, and further performs a model change action, that is, replaces some actuators of the coater or changes positions of some actuators of the coater. For example, a camera corresponding to product model A takes pictures at position M, while a camera corresponding to product model B takes pictures at position N, so the camera position needs to be changed. After the model change is completed, the coater continues, and a roll change process can be subsequently waited for startup.

[0111] In the above embodiments, by recognizing roll information, when it is determined that a target product model does not match a current product model, automatic model change and automatic adjustment of equipment parameters are achieved, reducing costs of manual misjudgment and reducing the problem of material docking failure due to inconsistent equipment parameter models.

[0112] In some embodiments, the controller 4 is further configured to control, when the first feedback result includes a match between the roll and the station where the roll is located and a match between the target product model and the current product model, the rotating mechanism to perform the roll change operation. In this embodiment, through judgment of a roll station and a product model, the roll change operation is performed only when the roll is a correct roll, reducing the risk of subsequent process material errors due to roll errors or product model errors.

[0113] In some other embodiments of this application, the controller 4 is further configured to, when a tape splicing operation on the roll is completed, send a second request message to the manufacturing execution system 5, where the second request message includes the roll identifier, a station where the roll is located, and a current product model; the manufacturing execution system 5 is further configured to generate a roll material identifier of the roll material according to the second request message, bind a correspondence between the roll material identifier and the roll identifier, and send a second feedback message to the controller.

[0114] For example, after roll change and tape splicing operations are completed, the PLC sends a roll ID, a machine number, and a current product model to the MES to request generation of a new film roll number. The MES generates a new film roll number, binds the film roll number to the roll ID, ends data recording and processing of the previous film roll, directs a target station to the station where the roll is located, and feeds back the roll ID and roll material status information to the PLC. The roll material status information includes, for example, whether the roll material is in production or has been produced, and the PLC can grasp the roll material status in a timely manner.

[0115] In the above embodiments, a binding process of roll material information is interacted between the controller and the manufacturing execution system, eliminating a manual process of requesting a film roll number, which can improve equipment automation degree and reduce the risk of not requesting a roll material identifier or repeatedly requesting a roll material identifier.

[0116] In the related art, the film roll number of a roll material is manually requested, and after production is completed, a shipping tag is printed and the shipping tag is stuck on a film roll, but there is a case where the shipping tag is not firmly stuck, causing the shipping tag to fall off, which easily causes loss of film roll data.

[0117] In some other embodiments of this application, the controller 4 is further configured to send the acquired production data related to the roll material to the manufacturing execution system 5; the manufacturing execution system 5 is further configured to bind a correspondence among the production data, the roll material identifier, and the roll identifier.

[0118] For example, during production, the PLC records in real time production data corresponding to a film roll number. The PLC may save the production data or may not save the production data, but sends the production data and the corresponding film roll number, roll ID, or the like to the MES, and the MES saves a correspondence among the production data, the film roll number, and the roll ID. After production is completed, when it is necessary to trace film roll data, the MES searches for corresponding production data and film roll number through the roll ID. Since there is no need for manual printing and sticking of a shipping tag, or other steps, the risk of film roll data loss is greatly reduced, and even the risk of equipment damage and material scrapping due to processing of an erroneous film roll in a subsequent process is reduced. In addition, since a film roll number request and production data binding are achieved through interaction between the controller and the manufacturing execution system, the risk that one roll requests multiple film roll numbers and production data cannot determine which film roll number to match is reduced.

[0119] FIG. 3 is a schematic diagram of a coating control system according to one or more embodiments. In this embodiment, the coating control system further includes a tape splicing mechanism 8 and a second reader 9, where the tape splicing mechanism 8 is disposed at the reeling station and configured to perform a tape splicing operation on the roll 6; the second reader 9 is disposed at the reeling station and configured to read the electronic tag 7 provided on the roll 6 located at the reeling station; and the controller 4 is further configured to control, according to recognition of the electronic tag by the second reader 9, the tape splicing mechanism 8 to perform the tape splicing operation on the roll.

[0120] In the related art, during tape splicing, a color mark and a color mark sensor are used to achieve roll positioning, which easily causes problems such as sensing failure of the color mark sensor due to color mark contamination. In the above embodiments, a reader is used to recognize an electronic tag to perform tape splicing control, which can improve tape splicing success rate and tape splicing quality and reduce the risk of tape splicing failure due to color mark contamination and lighting issues.

[0121] In some embodiments, the tape splicing mechanism includes components such as a pressure roller and a cutter for performing tape splicing operations, and the pressure roller, the cutter, and the like are located at one end of a swing arm mechanism close to the roll. The pressure roller is used to press the roll material onto an adhesive material. The cutter is used to cut the roll material on the current roll from the roll material on the previous roll.

[0122] In some embodiments, the second reader 9 is disposed on a frame at the reeling station, and when the roll is at the reeling station, the electronic tag 7 is within a reading range of the second reader 9, so that the second reader can recognize the electronic tag to achieve positioning of the roll. In addition, providing the second reader on the frame makes installation easier compared to installation at other positions.

[0123] In some embodiments, the controller 4 is further configured to position the roll according to recognition of the electronic tag by the second reader 9; and control, based on positioning information of the roll, the tape splicing mechanism to perform the tape splicing operation on the roll.

[0124] In this embodiment, since a position of the reader is fixed and a relative position of the electronic tag on the roll is fixed, the electronic tag rotates with the roll during rotation of the roll. When the reader detects the electronic tag, it indicates that the roll has rotated to a predetermined position, and this moment can be used as an initial moment of a tape splicing control timing. By calculating a specific moment for performing tape splicing, precise control of tape splicing can be achieved. The tape splicing process will be described in detail below.

[0125] In some embodiments, an adhesive material is further provided on a side face of the roll, the adhesive material is, for example, double-sided tape, the adhesive material extends axially along the roll, and a projection of the adhesive material on the end face of the roll is at a same circumferential position as the electronic tag, that is, the double-sided tape is aligned with the electronic tag position and stuck on the roll. The double-sided tape is, for example, strip-shaped and has a first edge and a second edge, and the first edge contacts the roll material before the second edge.

[0126] The controller determines a first time for the roll to rotate from when the second reader recognizes the electronic tag to when the first edge of the adhesive material contacts the roll material. As shown in FIGS. 4A and 4B, the second reader 9 recognizes the electronic tag 7, the electronic tag 7 and the adhesive material rotate counterclockwise with the roll, and after the first time, the first edge of the adhesive material needs to adhere to the roll material.

[0127] For example, the first time for the roll to rotate is determined according to an angle by which the roll rotates from when the second reader recognizes the electronic tag to when the first edge of the adhesive material contacts the roll material, and according to a time between two adjacent recognitions of the electronic tag by the second reader. For example, a time between two adjacent recognitions of the electronic tag by the second reader is T, that is, a time for the roll to rotate one full circle is T, an angle by which the roll rotates from when the second reader recognizes the electronic tag to when the first edge of the adhesive material contacts the roll material is C, and the roll rotates 360 degrees in one full circle, then the first time is a ratio of the angle C to 360 multiplied by the time T, that is, the first time Tc=(C / 360)*T. If the roll rotates one full circle expressed by 2π, the first time Tc=(C / 2π)*T, where the angle C is also expressed in radians.

[0128] Further, the controller determines a second time for the roll to rotate from when the first edge of the adhesive material contacts the roll material to when the second edge contacts the roll material. For example, the second time is determined according to a time between two adjacent recognitions of the electronic tag by the second reader, a circumference of the roll, and width information between the first edge and the second edge of the adhesive material.

[0129] For example, a time between two adjacent recognitions of the electronic tag by the second reader is T, a circumference of the roll is D, and a width of the adhesive material is L, then the second time is a ratio of the width L to the circumference D multiplied by the time T, that is, the second time Tj=(L / D)*T.

[0130] Further, the controller determines a third time required for a pressure roller 81 of the tape splicing mechanism to move from a pressure roller starting position to a pressing position and determines a fourth time required for a cutter 82 of the tape splicing mechanism to move from a cutter starting position to a cutting position. The pressure roller starting position is a position where the pressure roller waits close to the roll, and the pressing position is a position where the pressure roller pushes the roll material to the roll. The cutter starting position is a position where the cutter waits to cut the roll material, and the cutting position is a position where the cutter cuts the roll material. For example, the third time Ty and the fourth time Tq can be determined by a caliper measurement method. FIGS. 4A and 4B show the pressure roller 81 at the starting position, FIG. 4C shows the pressure roller 81 moving to the pressing position with a swing arm mechanism 83, and FIG. 4D shows the cutter 82 moving to the cutting position with the swing arm mechanism 83.

[0131] In some embodiments, the controller controls extension and retraction of the pressure roller by controlling a cylinder action of the pressure roller and controls extension and retraction of the cutter by controlling a cylinder action of the cutter.

[0132] The controller controls extension and retraction times of the pressure roller and the cutter based on the first time, the second time, the third time, and the fourth time, so as to achieve the tape splicing operation on the roll.

[0133] In the above embodiments, by controlling the extension and retraction times of the pressure roller and the cutter, sufficient adhesion between the roll material and the adhesive material can be improved, thereby improving the success rate and quality of automatic tape splicing.

[0134] The specific timing control of the pressure roller and the cutter will be described below by taking FIG. 5 as an example.

[0135] In FIG. 5, a zero point moment T0 is a moment when the second reader recognizes the electronic tag, the first edge of the adhesive material contacts the roll material after Tc, the pressure roller is controlled to extend after a first predetermined time T1 from when the second reader recognizes the electronic tag, the cutter is controlled to extend after a second predetermined time T2 from when the second reader recognizes the electronic tag, and the pressure roller and the cutter are controlled to retract after a third predetermined time T3 from when the second reader recognizes the electronic tag.

[0136] The first predetermined time T1 is determined according to a difference between the first time and the third time, the second predetermined time is determined according to a difference between a sum of the first time and the second time and the fourth time, and the third predetermined time is determined according to a sum of the first time and the second time. For example, T1=Tc−Ty, T2=Tc+Tj−Tq, T3=Tc+Tj.

[0137] In the above embodiments, by precisely controlling the pressure roller, the roll material and the adhesive material on the roll can be sufficiently adhered, reducing the probability of tape breakage due to insecure adhesion, and by precisely controlling extension and retraction of the cutter, excessively long trailing tails of the roll material can be reduced, thereby improving tape splicing quality.

[0138] FIG. 6 is a schematic diagram of a coating control method according to one or more embodiments. This embodiment is applied to a reeling process. As shown in FIG. 7A, in a coating reeling process, an empty roll B waits for loading at a standby position, and a roll A located at a reeling station is driven to rotate by a reeling mechanism such as a reeling shaft, achieving winding of a roll material onto the roll A located at the reeling station until the roll A is full. Parallel arrows represent an incoming material direction, and an arrow above the roll A represents a rotation direction of the reeling shaft. As shown in FIG. 7B, during roll change, a rotating mechanism such as a turret rotates, driving the empty roll B to rotate from the standby position to a reeling working position, and at this time, the full roll A is located at the standby position, and arrows between the roll A and the roll B represent a rotation direction of the turret. After the roll change process is completed, as shown in FIG. 7C, a tape splicing process is performed, and the control process will be described in detail later, where upward arrows identify a movement direction of a swing arm mechanism. After the tape splicing process is completed, as shown in FIG. 7D, a reeling process is performed until the empty roll B is full, where downward arrows represent a movement direction of the swing arm mechanism. Subsequently, the turret rotates, driving the full roll to rotate to the standby position, and after the full roll is unloaded, it is sent to the next process. The coating control method will be described in detail below.

[0139] Step 610: Before a rotating mechanism performs a roll change operation, a controller acquires, through a first reader, a roll identifier of a roll carried by an electronic tag on the roll located at a standby position and sends the roll identifier to a manufacturing execution system.

[0140] For example, a roll is loaded, and after loading is completed, the empty roll rotates, an RFID read-write device recognizes an RFID tag and reads a roll ID in the RFID tag, the RFID read-write device transmits the roll ID to a PLC, and the PLC sends the roll ID to an MES. Subsequently, the PLC also controls execution of operations such as roll change or tape splicing.

[0141] Step 620: Before a reeling mechanism performs a reeling operation, the manufacturing execution system generates a roll material identifier of a roll material to be wound onto the roll and sends the roll material identifier to the controller, where the roll material identifier corresponds to the roll identifier, and the roll material is a section of coated film.

[0142] For example, after the PLC completes tape splicing control, it sends a request for generating a film roll number to the MES, and after receiving the request, the MES generates a film roll number, binds the film roll number to the roll ID, and sends the film roll number to the controller.

[0143] Step 630: The controller controls the reeling mechanism to perform the reeling operation so as to wind the roll material onto the roll.

[0144] In the above embodiments, the controller reads a roll identifier in an electronic tag through a first reader and sends the roll identifier to a manufacturing execution system, and the manufacturing execution system generates a roll material identifier, where there is a correspondence between the roll material identifier and the roll identifier. Since there is no need for manual request of a roll material identifier, but a roll material identifier is generated through interaction between the controller and the manufacturing execution system, the probability of forgetting to request or repeatedly requesting a roll material identifier is reduced.

[0145] In some embodiments of this application, the controller acquires production data related to the roll material, where the production data corresponds to the roll identifier and the roll material identifier.

[0146] For example, after the PLC receives a film roll number sent by the MES, it controls a coater to perform a reeling operation, records production data after production is completed, and sends the production data to the MES, and the MES saves a correspondence among the production data, the roll identifier, and the roll material identifier.

[0147] In a subsequent process, an RFID read-write device reads a roll identifier, and then according to the correspondence, a roll material identifier and production data are searched in the MES, improving the reliability of film roll data traceability. In addition, since there is no need to print and stick a shipping tag, the risk of film roll data loss is greatly reduced, thereby reducing the risk of equipment damage and material scrapping due to processing of an erroneous film roll in a subsequent process.

[0148] FIG. 8 is a schematic diagram of a coating control method according to one or more embodiments.

[0149] Step 810: A controller sends a first request message to a manufacturing execution system, where the first request message includes a roll identifier and a station where a roll is located.

[0150] In some embodiments, the first request message may further include a current product model to facilitate product model comparison by the MES.

[0151] In some embodiments, the PLC sends a packet T10 to the MES, and the packet T10 includes information such as a packet name, the machine number, the current product model, and a roll ID.

[0152] Step 820: The manufacturing execution system determines, according to the first request message, a first feedback result including matching information between the roll and the station where the roll is located, and sends the first feedback result to the controller.

[0153] In some embodiments, the manufacturing execution system determines a target station of the roll according to the roll identifier and determines, according to the target station of the roll and the station where the roll is located, whether the roll matches the station where the roll is located.

[0154] For example, a machine number where the roll is located is 001, and a target machine number of the roll is determined to be 002 through the roll ID, indicating that the roll does not match the station where the roll is located. If the target machine number of the roll is also 001, it indicates that the roll matches the station where the roll is located. In this embodiment, by determining whether a roll matches through the MES, abnormal rolls can be detected in a timely manner, reducing the risk of material scrapping caused by subsequent reeling work using abnormal rolls.

[0155] In some embodiments, when the roll matches a station where coating is located, the manufacturing execution system recognizes a target product model according to the roll identifier and determines whether the target product model matches the current product model.

[0156] For example, the MES recognizes through the roll ID that a product model to be produced is 1001, but a product model currently generated by the coater is 1002, indicating that the target product model does not match the current product model, thereby recognizing an abnormal product in a timely manner and reducing the probability of subsequently producing a product that does not meet requirements.

[0157] In some embodiments, after generating a feedback result, the MES feeds back a packet T20 to the PLC, and the packet T20 includes information such as a packet name, a roll ID, whether the roll belongs to this station, and a target product model.

[0158] Step 830: The controller controls the coating control system according to the first feedback result.

[0159] In this embodiment, the controller controls the coating control system according to a feedback result of the manufacturing execution system, which can improve subsequent material docking efficiency and improve equipment automation degree.

[0160] In some embodiments, when the first feedback result includes a mismatch between the roll and the station where the roll is located, the controller issues an alarm message, thereby reminding staff in a timely manner to replace the roll.

[0161] In some embodiments, when the first feedback result includes a match between the roll and the station where the roll is located, the controller controls the rotating mechanism to perform the roll change operation, improving subsequent material docking efficiency.

[0162] In some embodiments, when the first feedback result includes a match between the roll and the station where the roll is located and a mismatch between the target product model and the current product model, the controller retrieves target coating operation parameters matching the target product model, replaces coating operation parameters corresponding to the current product model with the target coating operation parameters, and controls the rotating mechanism to perform the roll change operation, thereby achieving automatic model change and automatic adjustment of equipment parameters.

[0163] In some embodiments, when the first feedback result includes a match between the roll and a station where coating is located and a match between the target product model and the current product model, the controller controls the rotating mechanism to perform the roll change operation, reducing the risk of subsequent coating operation failure due to abnormal film rolls.

[0164] FIG. 9 is a schematic diagram of a coating control method according to one or more embodiments.

[0165] Step 910: A controller, when completing a tape splicing operation on a roll, sends a second request message to a manufacturing execution system, where the second request message includes a roll identifier, a station where the roll is located, and a current product model.

[0166] In some embodiments, the PLC sends a packet T30 to the MES, and the packet T30 includes a packet name, a machine number, a current product model, and a roll ID. In this embodiment, a film roll number is requested by sending the packet T30.

[0167] Step 920: The manufacturing execution system generates a roll material identifier of a roll material according to the second request message, binds a correspondence between the roll material identifier and the roll identifier, and sends a second feedback message to the controller.

[0168] In some embodiments, the MES feeds back a packet T40 to the PLC, and the packet T40 includes a packet name, a roll ID, and film roll status information.

[0169] In the above embodiments, when tape splicing is completed, the controller actively requests a roll material identifier from the manufacturing execution system, and the manufacturing execution system binds the roll identifier and the roll material identifier, improving equipment automation degree. Moreover, since a manual process of requesting a film roll number is eliminated, the probability of forgetting to request and repeatedly requesting a roll material identifier is reduced.

[0170] In some other embodiments of this application, the controller sends acquired production data related to a roll material to a manufacturing execution system, and the manufacturing execution system binds a correspondence among the production data, a roll material identifier, and a roll identifier.

[0171] For example, the PLC sends production data to the MES, and the MES saves a correspondence among the production data, the roll material identifier, and the roll identifier, improving the reliability of film roll data traceability and reducing the risk of data loss due to human factors.

[0172] In some other embodiments of this application, a roll change process is improved. A controller controls, according to recognition of an electronic tag located at a reeling station by a second reader, a tape splicing mechanism to perform a tape splicing operation on a roll.

[0173] In this embodiment, an electronic tag is used instead of a color mark, and a second reader is used instead of a color mark sensor to control the tape splicing mechanism to perform tape splicing control on the roll, which can reduce tape splicing failure problems caused by abnormal situations such as color mark contamination causing sensing failure of the color mark sensor.

[0174] In some embodiments, the roll is positioned according to recognition of the electronic tag by the second reader, and the tape splicing mechanism is controlled, based on positioning information of the roll, to perform the tape splicing operation on the roll. In this embodiment, using an arrival signal of the electronic tag for roll positioning and tape splicing control can improve control efficiency.

[0175] FIG. 10 is a schematic diagram of a coating control method according to one or more embodiments.

[0176] Step 1010: Determine a first time for a roll to rotate from when a second reader recognizes an electronic tag to when a first edge of an adhesive material contacts a roll material.

[0177] In some embodiments, the first time for the roll to rotate is determined according to an angle by which the roll rotates from when the second reader recognizes the electronic tag to when the first edge of the adhesive material contacts the roll material, and according to a time between two adjacent recognitions of the electronic tag by the second reader.

[0178] Step 1020: Determine a second time for the roll to rotate from when the first edge of the adhesive material contacts the roll material to when a second edge contacts the roll material, where the first edge contacts the roll material before the second edge.

[0179] In some embodiments, the second time is determined according to a time between two adjacent recognitions of the electronic tag by the second reader, a circumference of the roll, and width information between the first edge and the second edge of the adhesive material.

[0180] Step 1030: Determine a third time required for a pressure roller of a tape splicing mechanism to move from a pressure roller starting position to a pressing position.

[0181] For example, the time required for the pressure roller to move from the pressure roller starting position to the pressing position is determined by caliper measurement.

[0182] Step 1040: Determine a fourth time required for a cutter of the tape splicing mechanism to move from a cutter starting position to a cutting position.

[0183] For example, the time required for the cutter to move from the cutter starting position to the cutting position is determined by caliper measurement.

[0184] Step 1050: Control extension and retraction times of the pressure roller and the cutter based on the first time, the second time, the third time, and the fourth time, so as to achieve tape splicing control on the roll.

[0185] In some embodiments, a first predetermined time from when the second reader recognizes the electronic tag to when the pressure roller extends is determined according to a difference between the first time and the third time.

[0186] A second predetermined time from when the second reader recognizes the electronic tag to when the cutter extends is determined according to a difference between a sum of the first time and the second time and the fourth time.

[0187] A third predetermined time from when the second reader recognizes the electronic tag to when the pressure roller and the cutter are controlled to retract is determined according to a sum of the first time and the second time.

[0188] In the above embodiments, a signal for detecting an electronic tag is used to achieve tape splicing control, which improves adhesion tightness between a roll material and an adhesive material, and can reduce trailing tails of the roll material, improving the success rate and quality of automatic tape splicing.

[0189] A reeling process of this application will be described below by taking a specific embodiment as an example, as shown in FIG. 11.

[0190] Step 1110: A PLC controls roll loading. The roll is provided with an RFID tag, the RFID tag carrying a roll ID.

[0191] Step 1120: After loading is completed, the PLC controls an empty roll to rotate.

[0192] Step 1130: A first RFID read-write device recognizes the RFID tag and reads the roll ID in the RFID tag.

[0193] Step 1140: The PLC sends the roll ID, a machine number, and a current product model to an MES. For example, a message is sent through a packet T10.

[0194] Step 1150: The MES determines whether a target machine number of the roll matches a current machine number, and if they match, step 1160 is performed; otherwise, step 1170 is performed.

[0195] Step 1160: The MES determines whether the current product model matches a target product model, and if they match, step 1161 is performed; otherwise, step 1162 is performed.

[0196] Step 1161: The MES marks the roll as a correct roll.

[0197] Step 1162: The MES marks the roll as a model-change roll.

[0198] Step 1170: The MES marks the roll as an abnormal roll.

[0199] Step 1180: The MES feeds back a judgment result to the PLC. For example, a message is sent through a packet T20.

[0200] Step 1190: When the MES feeds back success, the PLC recognizes the feedback result.

[0201] Step 11100: When the feedback result is that the roll is an abnormal roll, the PLC outputs an alarm message, for example, outputs a voice prompt or text prompt of “please replace with a correct roll”.

[0202] Step 11110: When the feedback result is that the roll is a model-change roll, the PLC retrieves target model parameters.

[0203] Step 11120: The PLC replaces current model parameters with the target model parameters.

[0204] Step 11130: Equipment model change is performed.

[0205] Step 11131: After a model change action is completed, equipment readiness is prompted, and step 11140 is subsequently performed.

[0206] Step 11140: When the feedback result is that the roll is a correct roll, the PLC waits for roll change startup.

[0207] Step 11141: The PLC controls a roll change operation.

[0208] Step 11150: After a roll change action is completed, the PLC controls execution of a roll tape splicing action.

[0209] Step 11160: After the roll tape splicing action is completed, the PLC sends a request for acquiring a film roll number to the MES. For example, a message is sent through a packet T30.

[0210] Step 11170: The MES generates a film roll number.

[0211] Step 11180: The MES binds the film roll number to a roll ID and stops recording data to the previous film roll number.

[0212] Step 11190: The MES feeds back to the PLC to transmit the film roll number to the PLC. For example, a message is sent through a packet T40.

[0213] Step 11200: The PLC acquires production data and sends the production data to the MES.

[0214] Step 11210: The MES binds the production data to the film roll number.

[0215] In the above embodiments, manual request of film roll information and sticking of a shipping tag, and other steps are eliminated, but a PLC automatically requests a film roll number from an MES, and the MES binds a correspondence between production data and a film roll number, improving the reliability of film roll information traceability. In addition, through recognition of roll information, automatic model change and automatic adjustment of equipment parameters as well as automatic processing of abnormal rolls or film rolls are achieved, reducing labor costs and improving equipment automation degree and flexible processing capability.

[0216] Those skilled in the art can understand that in the above method of the specific embodiments, a writing order of various steps does not mean a strict execution order and does not constitute any limitation on an implementation process, and a specific execution order of various steps should be determined by their functions and possible internal logic.

[0217] The above descriptions of various embodiments tend to emphasize differences between various embodiments, and the same or similar parts thereof can be referred to each other. For brevity, details are not repeated herein.

[0218] So far, this application has been described in detail. To avoid obscuring the concept of this application, some details known in the art are not described. Those skilled in the art can fully understand how to implement the technical solutions disclosed herein according to the above description.

[0219] The method and system of this application may be implemented in many ways. For example, the method and system of this application may be implemented by software, hardware, firmware, or any combination of software, hardware, and firmware. The above order of steps of the method is only for illustration, and the steps of the method of this application are not limited to the order specifically described above unless otherwise specifically stated. In addition, in some embodiments, this application may also be implemented as a program recorded in a recording medium, and these programs include machine-readable instructions for implementing the method according to this application. Therefore, this application also covers a recording medium storing a program for executing the method according to this application.

[0220] Although some specific embodiments of this application have been described in detail by examples, those skilled in the art should understand that the above examples are only for illustration and not for limiting the scope of this application. Those skilled in the art should understand that the above embodiments can be modified without departing from the scope and spirit of this application. The scope of this application is defined by the appended claims.

Examples

Embodiment Construction

[0056]The embodiments of this application will be further described in detail below with reference to the accompanying drawings and embodiments. The detailed description and drawings of the following embodiments are used to exemplarily illustrate the principles of this application, but cannot be used to limit the scope of this application, that is, this application is not limited to the described embodiments.

[0057]In the description of this application, it should be noted that, unless otherwise stated, “multiple” means two or more; and the orientations or positional relationships indicated by the terms “upper”, “lower”, “left”, “right”, “inner”, “outer”, and the like are only for convenience of describing this application and simplifying the description, and do not indicate or imply that the referred means or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. In addi...

Claims

1. A coating control system, comprising:a rotating mechanism configured to perform a roll change operation so as to rotate a roll located at a standby position to a reeling station, wherein the roll is provided with an electronic tag, and the electronic tag carries a roll identifier of the roll;a reeling mechanism configured to perform a reeling operation so as to wind a roll material onto the roll at the reeling station, wherein the roll material is a section of coated film;a first reader disposed at the standby position and configured to read the electronic tag provided on the roll located at the standby position;a controller electrically connected to the first reader and configured to acquire the roll identifier from the first reader before the rotating mechanism performs the roll change operation and to send the roll identifier to a manufacturing execution system; andthe manufacturing execution system electrically connected to the controller and configured to generate a roll material identifier corresponding to the roll material before the reeling mechanism performs the reeling operation, wherein the roll identifier corresponds to the roll material identifier.

2. The coating control system according to claim 1, whereinthe electronic tag is located on an end face of the roll; andthe first reader is disposed on a frame at the standby position, and when the roll is at the standby position, the electronic tag is within a reading range of the first reader.

3. The coating control system according to claim 1, whereinthe controller is further configured to acquire production data related to the roll material, wherein the production data corresponds to the roll identifier and the roll material identifier.

4. The coating control system according to claim 1, whereinthe controller is further configured to send a first request message to the manufacturing execution system, wherein the first request message comprises the roll identifier and a station where the roll is located; andthe manufacturing execution system is further configured to determine, according to the first request message, a first feedback result comprising matching information between the roll and the station where the roll is located, and to send the first feedback result to the controller so that the controller controls the coating control system according to the first feedback result.

5. The coating control system according to claim 4, whereinthe controller is further configured to control, when the first feedback result comprises a match between the roll and the station where the roll is located, the rotating mechanism to perform the roll change operation.

6. The coating control system according to claim 4, whereinthe manufacturing execution system is further configured to determine a target station of the roll according to the roll identifier and to determine, according to the target station of the roll and the station where the roll is located, whether the roll matches the station where the roll is located.

7. The coating control system according to claim 4, wherein the first request message further comprises a current product model, and the first feedback result further comprises matching information between a target product model and the current product model, whereinthe controller is further configured to retrieve, when the first feedback result comprises a match between the roll and the station where the roll is located and a mismatch between the target product model and the current product model, target coating operation parameters matching the target product model, replace coating operation parameters corresponding to the current product model with the target coating operation parameters, and control the rotating mechanism to perform the roll change operation.

8. The coating control system according to claim 1, further comprising:a tape splicing mechanism disposed at the reeling station and configured to perform a tape splicing operation on the roll; anda second reader disposed at the reeling station and configured to read the electronic tag provided on the roll located at the reeling station;wherein the controller is further configured to control, according to recognition of the electronic tag by the second reader, the tape splicing mechanism to perform the tape splicing operation on the roll.

9. The coating control system according to claim 8, whereinthe second reader is disposed on a frame at the reeling station, and when the roll is at the reeling station, the electronic tag is within a reading range of the second reader.

10. The coating control system according to claim 8, wherein the controller is further configured to:position the roll according to recognition of the electronic tag by the second reader; andcontrol, based on positioning information of the roll, the tape splicing mechanism to perform the tape splicing operation on the roll.

11. The coating control system according to claim 10, wherein an adhesive material is further provided on a side face of the roll, the adhesive material extends axially along the roll, and a projection of the adhesive material on an end face of the roll is at a same circumferential position as the electronic tag, wherein the controller is further configured to:determine a first time for the roll to rotate from when the second reader recognizes the electronic tag to when a first edge of the adhesive material contacts the roll material;determine a second time for the roll to rotate from when the first edge of the adhesive material contacts the roll material to when a second edge contacts the roll material, wherein the first edge contacts the roll material before the second edge;determine a third time required for a pressure roller of the tape splicing mechanism to move from a pressure roller starting position to a pressing position;determine a fourth time required for a cutter of the tape splicing mechanism to move from a cutter starting position to a cutting position; andcontrol extension and retraction times of the pressure roller and the cutter based on the first time, the second time, the third time, and the fourth time, so as to achieve the tape splicing operation on the roll.

12. The coating control system according to claim 1, whereinthe electronic tag comprises a radio frequency identification RFID tag, and the first reader comprises an RFID read-write device; orthe electronic tag comprises a near field communication NFC card, and the first reader comprises an NFC card reader; orthe electronic tag comprises a two-dimensional code, and the first reader comprises a two-dimensional code recognizer.

13. A coating control method, comprising:before a rotating mechanism performs a roll change operation, acquiring, by a controller through a first reader, a roll identifier of a roll carried by an electronic tag on the roll located at a standby position, and sending the roll identifier to a manufacturing execution system;before a reeling mechanism performs a reeling operation, generating, by the manufacturing execution system, a roll material identifier of a roll material to be wound onto the roll, and sending the roll material identifier to the controller, wherein the roll material identifier corresponds to the roll identifier, and the roll material is a section of coated film; andcontrolling, by the controller, the reeling mechanism to perform the reeling operation so as to wind the roll material onto the roll.

14. The coating control method according to claim 13, further comprising:acquiring, by the controller, production data related to the roll material, wherein the production data corresponds to the roll identifier and the roll material identifier.

15. The coating control method according to claim 13, further comprising:sending, by the controller, a first request message to the manufacturing execution system, wherein the first request message comprises the roll identifier and a station where the roll is located;determining, by the manufacturing execution system according to the first request message, a first feedback result comprising matching information between the roll and the station where the roll is located, and sending the first feedback result to the controller; andcontrolling, by the controller, a coating control system according to the first feedback result.

16. The coating control method according to claim 15, wherein the controlling, by the controller, a coating control system according to the first feedback result comprises:when the first feedback result comprises a match between the roll and the station where the roll is located, controlling, by the controller, the rotating mechanism to perform the roll change operation.

17. The coating control method according to claim 15, wherein the determining, by the manufacturing execution system according to the first request message, a first feedback result comprising matching information between the roll and the station where the roll is located comprises:determining, by the manufacturing execution system, a target station of the roll according to the roll identifier, and determining, according to the target station of the roll and the station where the roll is located, whether the roll matches the station where the roll is located.

18. The coating control method according to claim 15, wherein the first request message further comprises a current product model, and the first feedback result further comprises matching information between a target product model and the current product model, wherein the controlling, by the controller, a coating control system according to the first feedback result comprises:when the first feedback result comprises a match between the roll and the station where the roll is located and a mismatch between the target product model and the current product model, retrieving, by the controller, target coating operation parameters matching the target product model, replacing coating operation parameters corresponding to the current product model with the target coating operation parameters, and controlling the rotating mechanism to perform the roll change operation.

19. The coating control method according to claim 13, further comprising:when the controller completes a tape splicing operation on the roll, sending, by the controller, a second request message to the manufacturing execution system, wherein the second request message comprises the roll identifier, a station where the roll is located, and a current product model; andgenerating, by the manufacturing execution system, a roll material identifier of the roll material according to the second request message, binding a correspondence between the roll material identifier and the roll identifier, and sending a second feedback message to the controller.

20. The coating control method according to claim 19, further comprising:sending, by the controller, the acquired production data related to the roll material to the manufacturing execution system; andbinding, by the manufacturing execution system, a correspondence among the production data, the roll material identifier, and the roll identifier.

21. The coating control method according to claim 19, whereinthe second feedback message comprises the roll identifier and roll material status information.

22. The coating control method according to claim 13, further comprising:controlling, by the controller according to recognition of the electronic tag located at a reeling station by a second reader, a tape splicing mechanism to perform a tape splicing operation on the roll.

23. The coating control method according to claim 22, wherein the controlling, by the controller according to recognition of the electronic tag located at a reeling station by a second reader, a tape splicing mechanism to perform a tape splicing operation on the roll comprises:positioning the roll according to the recognition of the electronic tag by the second reader; andcontrolling, based on positioning information of the roll, the tape splicing mechanism to perform the tape splicing operation on the roll.

24. The coating control method according to claim 23, wherein the electronic tag is located on an end face of the roll, the second reader is located on a frame at the reeling station, and when the roll is at the reeling station, the electronic tag is within a reading range of the second reader, wherein an adhesive material is located on a side face of the roll and extends axially along the roll, and a projection of the adhesive material on the end face of the roll is at a same circumferential position as the electronic tag, wherein the controlling, by the controller, a tape splicing mechanism to perform a tape splicing operation on the roll comprises:determining, by the controller, a first time for the roll to rotate from when the second reader recognizes the electronic tag to when a first edge of the adhesive material contacts the roll material;determining, by the controller, a second time for the roll to rotate from when the first edge of the adhesive material contacts the roll material to when a second edge contacts the roll material, wherein the first edge contacts the roll material before the second edge;determining, a third time required for a pressure roller of the tape splicing mechanism to move from a pressure roller starting position to a pressing position;determining a fourth time required for a cutter of the tape splicing mechanism to move from a cutter starting position to a cutting position; andcontrolling, by the controller, extension and retraction times of the pressure roller and the cutter based on the first time, the second time, the third time, and the fourth time, so as to achieve tape splicing control on the roll.

25. The coating control method according to claim 24, wherein the determining, by the controller, a first time for the roll to rotate comprises:determining the first time for the roll to rotate according to an angle by which the roll rotates from when the second reader recognizes the electronic tag to when the first edge of the adhesive material contacts the roll material, and according to a time between two adjacent recognitions of the electronic tag by the second reader.

26. The coating control method according to claim 24, wherein the determining, by the controller, a second time for the roll to rotate comprises:determining the second time according to a time between two adjacent recognitions of the electronic tag by the second reader, a circumference of the roll, and width information between the first edge and the second edge of the adhesive material.

27. The coating control method according to claim 24, wherein the controlling, by the controller, extension and retraction times of the pressure roller and the cutter comprises:after the second reader recognizes the electronic tag, controlling the pressure roller to extend after a first predetermined time, wherein the first predetermined time is determined according to a difference between the first time and the third time;after the second reader recognizes the electronic tag, controlling the cutter to extend after a second predetermined time, wherein the second predetermined time is determined according to a difference between a sum of the first time and the second time and the fourth time; andafter the second reader recognizes the electronic tag, controlling the pressure roller and the cutter to retract after a third predetermined time, wherein the third predetermined time is determined according to a sum of the first time and the second time.

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