CN110865601A - Bus control method for coating machine - Google Patents
Bus control method for coating machine Download PDFInfo
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- CN110865601A CN110865601A CN201911245279.9A CN201911245279A CN110865601A CN 110865601 A CN110865601 A CN 110865601A CN 201911245279 A CN201911245279 A CN 201911245279A CN 110865601 A CN110865601 A CN 110865601A
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- servo controller
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
- G05B19/05—Programmable logic controllers, e.g. simulating logic interconnections of signals according to ladder diagrams or function charts
- G05B19/058—Safety, monitoring
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/10—Plc systems
- G05B2219/14—Plc safety
- G05B2219/14006—Safety, monitoring in general
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Coating Apparatus (AREA)
Abstract
The application discloses a coater bus control method, wherein the bus Profinet network comprises the following equipment: the servo motor comprises an unreeling servo controller, a main driving servo controller, a die head gap left and right servo controller, a coating valve servo controller, a material returning valve servo controller, a carrier roller servo controller, a rear driving servo controller, a reeling servo controller, a quick input module and an encoder input module. The invention realizes isochronous synchronization in the true sense, has faster bus communication speed, and can directly send speed or position set values.
Description
Technical Field
The application relates to a lithium battery coating machine, in particular to a coating machine bus control method.
Background
The prior art uses PLC to communicate with the servo based on a pulse mode. The burst mode is generally a simple servo application where the requirements are not high. It is known that both the transmitted and received pulses are delayed.
The disadvantages of the prior art solutions are as follows:
1. the wiring cost is high. The remote control is easy to interfere the signal and the signal drift problem.
2. The pulse mode can only transmit position or speed information in a one-way mode, if specific data is needed, 485 bus control must be added, 485 bus efficiency is low, multi-node polling time is too long, data updating is slow, and instantaneity is poor.
3. The servo equipment is added, a module needs to be added, and when the number of servo units is large, even the requirement can be met by using PLC hardware with higher level.
4. The programming quantity of the pulse direction control mode is large, the debugging is complex and the like.
5. There is no detailed diagnostic information.
Disclosure of Invention
The invention aims to provide a bus control method of a coating machine, which can really realize isochronous synchronization, has higher bus communication speed and can directly send speed or position set values.
In order to achieve the above object, the present invention provides the following technical solutions.
The embodiment of the application discloses a coater bus control method, and the operation in a bus Profinet network comprises the following equipment: CPU _ PLC, a servo motor, PROFINET IO equipment, a touch screen and an industrial Ethernet switch, wherein the servo motor comprises an unwinding servo controller, a main driving servo controller, a die head gap left and right servo controller, a coating valve servo controller, a material returning valve servo controller, a carrier roller servo controller, a rear driving servo controller, a winding servo controller, a quick input module and an encoder input module,
in the tape-moving process, the servo motor operates according to parameters, the position of the swing roller is detected in real time to determine whether the position is the middle position, and the original speed is dynamically superposed according to the result PID to implement dynamic regulation;
in the coating process, whether the tape transport linear velocity is reached or not is judged when the coating valve and the material return valve wait for operation, a cam track is output according to a coating process, a corresponding length and a gap value and an algorithm when the tape transport linear velocity is reached, the coating valve and the material return valve act according to the set cam track, then the coating length and the gap are detected in real time through a color code sensor and an encoder, whether the coating length and the gap meet requirements or not is judged, and if the coating length and the gap meet the requirements, the tape transport linear velocity continues to operate.
Preferably, in the above coater bus control method, the bus Profinet network employs siemens Profinet bus protocol.
Preferably, in the bus control method of the coating machine, in the tape transport process, the carrier roller servo controller and the main drive servo controller set parameters through the touch screen.
Preferably, in the bus control method of the coating machine, the position of the unwinding roller is fed back to the unwinding servo controller in real time, the position of the rear driving swing roller is fed back to the rear driving servo controller in real time, and the position of the winding swing roller is fed back to the winding servo controller in real time.
Preferably, in the bus control method of the coating machine, the touch screen modifies the parameters and modifies the cam track when the coating length and the gap are not qualified in the coating process.
Compared with the prior art, the technical scheme of the invention has the advantages that:
1. the wiring cost is saved, the wiring time is reduced, and the error probability is reduced. A bus communication port of the PLC can be connected with a plurality of servos, and the servos can be connected with each other through simple RJ45 ports in a plugging mode, so that the construction period is shortened.
2. The information amount is larger: the system is full-digital information interactive, and can bidirectionally transmit data such as a plurality of parameters, instructions, states and the like; the pulse mode can only transmit position or speed information in one direction.
3. High precision, digital communication mode: the signal drift problem is avoided, and the precision of the instruction and the feedback data can reach 32-bit.
4. The total cost of the system is reduced, when more than two servos are used, the configuration of the PLC is not required to be adjusted, the pulse or axis control module is required to be added in the original technical scheme, and when the number of the servos is more, even the higher-level PLC hardware is required to be used to meet the requirement.
5. The PLC can monitor the faults of the servo motor in real time through the bus and display the faults on the HMI. Meanwhile, the PLC can monitor information such as the actual position and the actual speed of the servo motor and can automatically adjust servo parameters according to the requirement by a program. The servo parameters can be set in the HMI without the modification of a servo panel, and errors are not easy to occur.
6. And a standard motion function block library is adopted, so that the programming debugging efficiency is improved: the problems of large programming quantity, complex debugging and the like of the traditional pulse direction control mode are solved, the efficiency is improved, and the cost and the time are saved.
7. The remote control can be realized, the production line equipment is very long, or the servo quantity is more, the installation cost is low, and the method is very convenient.
8. According to the requirements of the coating valve and the material return valve, a cam curve of a valve switch is established first, and isochronous synchronous control is achieved.
9. The maintainability is stronger, and more state information and diagnosis information exist.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments described in the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a flow chart of a method for controlling a bus of a coater according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described in detail below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Referring to fig. 1, a coater bus control method: the operation in the bus Profinet network comprises the following devices: CPU _ PLC, a servo motor, PROFINET IO equipment, a touch screen and an industrial Ethernet switch, wherein the servo motor comprises an unwinding servo controller, a main driving servo controller, a die head gap left and right servo controller, a coating valve servo controller, a material returning valve servo controller, a carrier roller servo controller, a rear driving servo controller, a winding servo controller, a quick input module and an encoder input module,
in the tape-moving process, a servo motor runs according to parameters, the position of a swing roller is detected in real time to determine whether the position is the middle position, and the original speed is dynamically superposed according to the result PID to implement dynamic regulation;
in the coating process, whether the tape transport linear velocity is reached or not is judged when the coating valve and the material return valve wait for operation, a cam track is output according to a coating process, a corresponding length and a gap value and an algorithm when the tape transport linear velocity is reached, the coating valve and the material return valve act according to the set cam track, then the coating length and the gap are detected in real time through a color code sensor and an encoder, whether the coating length and the gap meet requirements or not is judged, and if the coating length and the gap meet the requirements, the tape transport linear velocity continues to operate. The bus Profinet network uses siemens Profinet bus protocol.
Further, in the tape transport process, parameters are set through the touch screen by the carrier roller servo controller and the main drive servo controller.
Further, the position of the unwinding roller is fed back to the unwinding servo controller in real time, the position of the rear driving swing roller is fed back to the rear driving servo controller in real time, and the position of the winding swing roller is fed back to the winding servo controller in real time.
Further, in the coating process, when the coating length and the gap are unqualified, the touch screen modifies the parameters and modifies the cam track.
In the technical scheme, in order to improve the operation speed and position control precision of the coating equipment, a Siemens PROFINET bus protocol is adopted, a bus control mode is adopted, and the PLC data transmission speed is improved, namely the response speed of the equipment operation is high; in addition, the data transmission precision of the PLC is greatly improved; the coating valve and the material returning valve are hung in a Siemens bus, and the control of the valves is controlled by cam switching.
The operation principle of the device is as follows: unreel the substrate through unwinding mechanism and carry the substrate to coating mechanism, the thick liquids are through material loading system with lithium electricity thick liquids steady transport under certain pressure scribble coating extrusion die head, the thick liquids through the extrusion mill lip spray to the substrate on, the substrate and the thick liquids of scribbling the thick liquids move the stoving box and dry, pole piece after the stoving is through back drive and rolling.
The existing devices in the existing place mostly operate in 1 Profinet network, and the field bus controls the following devices: the system comprises a CPU _ PLC, a servo driver, PROFINET IO equipment, an industrial Ethernet switch and a touch screen; and isochronous synchronous control of each servo valve is realized through a Profinet network, and stable and efficient control is realized. Through various shafts, through swing rolls and various algorithms, the base material is controlled at a high speed, and the tape moving speed can reach 80 m/min.
And (3) uniform extrusion of the slurry: the method is realized by controlling the switching of the coating valve and the feed back valve, and the real-time performance and the effectiveness are ensured by establishing a cam curve (the opening time and the opening distance of the valve) and then synchronously controlling the follow-up shaft and the main shaft. The valve is controlled to be accurate to 0.3 mm.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing is directed to embodiments of the present application and it is noted that numerous modifications and adaptations may be made by those skilled in the art without departing from the principles of the present application and are intended to be within the scope of the present application.
Claims (5)
1. A bus control method for a coater, characterized in that the bus Profinet network is operated with the following devices: CPU _ PLC, a servo motor, PROFINET IO equipment, a touch screen and an industrial Ethernet switch, wherein the servo motor comprises an unwinding servo controller, a main driving servo controller, a die head gap left and right servo controller, a coating valve servo controller, a material returning valve servo controller, a carrier roller servo controller, a rear driving servo controller, a winding servo controller, a quick input module and an encoder input module,
in the tape-moving process, the servo motor operates according to parameters, the position of the swing roller is detected in real time to determine whether the position is the middle position, and the original speed is dynamically superposed according to the result PID to implement dynamic regulation;
in the coating process, whether the tape transport linear velocity is reached or not is judged when the coating valve and the material return valve wait for operation, a cam track is output according to a coating process, a corresponding length and a gap value and an algorithm when the tape transport linear velocity is reached, the coating valve and the material return valve act according to the set cam track, then the coating length and the gap are detected in real time through a color code sensor and an encoder, whether the coating length and the gap meet requirements or not is judged, and if the coating length and the gap meet the requirements, the tape transport linear velocity continues to operate.
2. Coater bus control method according to claim 1, characterised in that the bus Profinet network uses siemens Profinet bus protocol.
3. The bus control method of claim 1, wherein the idler servo controller and the main drive servo controller set parameters via the touch screen during tape transport.
4. The bus control method of claim 1, wherein the unwinding roll position is fed back to the unwinding servo controller in real time, the rear driving swing roll position is fed back to the rear driving servo controller in real time, and the winding swing roll position is fed back to the winding servo controller in real time.
5. The bus control method of a coating machine according to claim 1, wherein the touch screen modifies parameters and modifies the cam track when the coating length and the gap are not qualified during the coating process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911245279.9A CN110865601A (en) | 2019-12-06 | 2019-12-06 | Bus control method for coating machine |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201911245279.9A CN110865601A (en) | 2019-12-06 | 2019-12-06 | Bus control method for coating machine |
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| CN110865601A true CN110865601A (en) | 2020-03-06 |
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| JP2011041892A (en) * | 2009-08-20 | 2011-03-03 | Toyota Motor Corp | Coating machine |
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Application publication date: 20200306 |