CN111674998A - Taper tension control system for film-coated plate reeling and control method thereof - Google Patents
Taper tension control system for film-coated plate reeling and control method thereof Download PDFInfo
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- CN111674998A CN111674998A CN202010363739.4A CN202010363739A CN111674998A CN 111674998 A CN111674998 A CN 111674998A CN 202010363739 A CN202010363739 A CN 202010363739A CN 111674998 A CN111674998 A CN 111674998A
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000006073 displacement reaction Methods 0.000 claims abstract description 77
- 238000004891 communication Methods 0.000 claims abstract description 38
- 239000000463 material Substances 0.000 claims description 29
- 238000004804 winding Methods 0.000 claims description 24
- 238000005096 rolling process Methods 0.000 claims description 23
- 239000007888 film coating Substances 0.000 claims description 16
- 238000009501 film coating Methods 0.000 claims description 16
- 238000010030 laminating Methods 0.000 claims description 13
- 238000005520 cutting process Methods 0.000 claims description 12
- 210000002489 tectorial membrane Anatomy 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 claims description 11
- 238000012544 monitoring process Methods 0.000 claims description 8
- 230000008859 change Effects 0.000 claims description 7
- 239000007787 solid Substances 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 5
- 239000002362 mulch Substances 0.000 claims 2
- 238000001514 detection method Methods 0.000 claims 1
- 238000003860 storage Methods 0.000 description 10
- 230000008569 process Effects 0.000 description 7
- 238000010586 diagram Methods 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000002789 length control Methods 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/18—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web
- B65H23/188—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web
- B65H23/1888—Registering, tensioning, smoothing or guiding webs longitudinally by controlling or regulating the web-advancing mechanism, e.g. mechanism acting on the running web in connection with running-web and controlling web tension
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H19/00—Changing the web roll
- B65H19/22—Changing the web roll in winding mechanisms or in connection with winding operations
- B65H19/26—Cutting-off the web running to the wound web roll
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H20/00—Advancing webs
- B65H20/02—Advancing webs by friction roller
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H26/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H26/00—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms
- B65H26/02—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to presence of irregularities in running webs
- B65H26/04—Warning or safety devices, e.g. automatic fault detectors, stop-motions, for web-advancing mechanisms responsive to presence of irregularities in running webs for variation in tension
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2515/00—Physical entities not provided for in groups B65H2511/00 or B65H2513/00
- B65H2515/30—Forces; Stresses
- B65H2515/31—Tensile forces
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- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
- Winding, Rewinding, Material Storage Devices (AREA)
Abstract
The invention discloses a taper tension control system for coiling a film covering plate and a control method thereof, wherein the taper tension control system comprises a coiling machine, a frequency converter module for controlling the torque of the coiling machine, a displacement encoder module for detecting the coiling length of the film covering plate, a human-computer interface, a controller and a communication module, wherein the human-computer interface, the displacement encoder module and the communication module are electrically connected with the controller, the input end of the frequency converter module is electrically connected with the communication module, and the output end of the frequency converter module is electrically connected with the coiling machine.
Description
Technical Field
The invention relates to the technical field of plate production, in particular to a taper tension control system for coiling a film-coated plate and a control method thereof.
Background
Under the environment of wide market application of newly-developed tectorial membrane coiled material in China, the requirement of market to tectorial membrane coiled material product quality is also higher and higher, and tectorial membrane coiled material production line is slow because of the linear velocity, the small investment, and equipment manufacturer adopts constant tension control system usually when designing, and the rolling machine converter outputs a invariable current value all the time in the process of hanging of rolling to guarantee to set for tensile stability and invariant, and the demand of part thick plate product has been satisfied to this kind of mode. According to the prior art, for products with thin material specifications (less than 0.45 mm) or products with the surface pressed into a reticulate pattern, because the rigidity strength of the products is not large or the contact between layers is reduced after the products are coiled, when the diameter of the coiled products is increased along with the coiling, the outer layer can extrude the inner layer, and when the products are influenced by external forces such as bumping in the transportation process, lifting process and the like, the deformation and the collapse of the coils are caused, so that the product quality is influenced, and the reliability is poor.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the defects of the prior art are overcome, and the high-reliability conical tension control system for coiling the film coating plate and the control method thereof are provided.
In order to achieve the purpose, the technical scheme of the invention is as follows:
the taper tension control system for coiling the film coating plate comprises a coiling machine, a frequency converter module for controlling the torque of the coiling machine, a displacement encoder module for detecting the coiling length of the film coating plate, a human-computer interface, a controller and a communication module, wherein the human-computer interface, the displacement encoder module and the communication module are electrically connected with the controller, the input end of the frequency converter module is electrically connected with the communication module, and the output end of the frequency converter module is electrically connected with the coiling machine.
After adopting the structure, compared with the prior art, the invention has the following advantages: utilize displacement encoder module to detect the tectorial membrane board and batch length, displacement encoder module gives the controller to the data transfer who detects, and the tapering tension value is calculated to the controller, and communication module sends the tapering tension value for the converter module, changes converter torque output value to the moment of torsion of control coiling machine output realizes that tapering tension control rolls up the tectorial membrane board, and the reliability is high.
Preferably, the controller is a PLC, so that the control is convenient.
Preferably, the laminating machine further comprises a proximity switch used for controlling the pulse accumulated value of the displacement encoder module to be cleared, the proximity switch is arranged above the laminating plate cutting device, the controller is electrically connected with the proximity switch, and the pulse accumulated value of the displacement encoder module is cleared when the laminating plate is rolled and cut, so that the next cutting is facilitated.
Preferably, the PLC selects Siemens S7-200 SMAR and is provided with a Siemens special high-speed processor chip, the execution time of basic instructions can reach 0.15us, the reaction is fast, and the efficiency is high.
Preferably, the displacement encoder module is arranged on a driving roller on a film covering plate production line, and the film covering plate is wrapped on the driving roller, so that the displacement encoder can rotate along with the rotation of the driving roller, and the conveyed film covering plate can be detected.
As preferred, it still includes the backup pad, the side of backup pad one end be equipped with solid fixed ring, solid fixed ring cover establish on the driving roller, the displacement encoder module establish on the support frame other end, simple structure is convenient for fix the displacement encoding module on the driving roller.
Preferably, the outer circumference of the fixing ring is provided with at least two fixing holes, the driving roller is provided with a mounting hole corresponding to the fixing hole, and a screw penetrates through the fixing hole and is screwed in the mounting hole, so that the mounting and dismounting are convenient, and the reliability is high.
Preferably, the fixing ring and the displacement encoder module are respectively positioned on two side surfaces of the supporting plate, and are reasonably distributed without interference.
Preferably, the communication module adopts an rs485 communication mode, and the reliability is high.
Preferably, the coiling length monitoring system further comprises a production billboard, the communication module is electrically connected with the production billboard, the coiling length calculation module is used for calculating to obtain real-time coiling length data through the communication module of the controller (PLC), and the real-time coiling length data are sent to the production billboard, so that an operator can observe coiling length information at a remote place conveniently.
The control method of the taper tension control system for film coating plate reeling comprises the following steps:
fixing a displacement encoder module on a driving roller, so that the driving roller synchronously measures the displacement of the film covering plate and obtains a pulse signal of the displacement;
secondly, executing a linear velocity calculation module through a controller timing interrupt function according to a pulse signal transmitted by a displacement encoder module, executing the linear velocity calculation module every 10ms so as to calculate the pulse quantity received every 10ms, then calculating the length value of each pulse according to the diameter of a measuring wheel of the displacement encoder module and the number of pulses of each circle of the displacement encoder module, then calculating the movement quantity of a 10ms material according to the pulse quantity received every 10ms and the length value of each pulse, converting the movement quantity of the 10ms material into a linear velocity value per minute, and transmitting real-time linear velocity data to a human-computer interface;
acquiring real-time length data according to the pulse signals transmitted by the displacement encoder module, the diameter of a measuring wheel of the displacement encoder module and the number of pulses per circle of the displacement encoder module, and transmitting the real-time length data to the rolling weight calculation module, the taper tension calculation module and the human-computer interface;
fourthly, calculating the real-time coiling weight according to the material density and the material specification set by the human-computer interface and the length value calculated by the coiling length calculation module;
fifthly, setting a basic tension value and a taper tension compensation rate set by a picture according to the real-time length data calculated by the rolling length calculation module and parameters of the human-computer interface, and sending the real-time dynamic taper tension data to a monitoring picture of the human-computer interface and a communication module;
and sixthly, the dynamic taper tension value calculated by the taper tension calculation module is in communication connection with the controller and the frequency converter module in an rs485 communication mode, and dynamic taper tension data are sent to the frequency converter module in a Modbus protocol RTU transmission mode to change a set torque value of the frequency converter in real time, so that the torque output by the winding machine is controlled, and the coated plate is wound and controlled by the taper tension.
Compared with the prior art, the invention has the following advantages: the control method can more accurately control the taper tension, adjust the taper tension every 10ms, enable the torque of the frequency converter to be in the dynamic change all the time, adjust in real time, and for products with thinner material specification (less than 0.45 mm) or products with reticulate pressed surfaces, under the influence of external forces such as bumping and lifting processes in the product transportation process, the phenomenon of deformation and collapse is avoided, the product quality is good, and the reliability is high.
Drawings
FIG. 1 is a front view of a taper tension control system for film web reeling of the present disclosure;
FIG. 2 is a schematic circuit diagram of a taper tension control system for film coating plate reeling according to the present invention;
FIG. 3 is a front view of a support frame, a driving roller and a displacement encoder module of a taper tension control system for film laminating plate reeling according to the present invention;
FIG. 4 is a wiring diagram of a controller of a taper tension control system for film-coated sheet reeling according to the present invention;
FIG. 5 is a circuit diagram of a taper tension control system for film coating plate reeling according to the present invention.
The device comprises a communication module 1, a displacement encoder module 2, a proximity switch 3, a frequency converter module 4, a coiler 6, a controller 7, a human-computer interface 8, a transmission roller 9, a fixing ring 10, a production signboard 11, a fixing hole 12, a supporting plate 61, a linear velocity calculating module 62, a rolling length calculating module 63, a rolling weight calculating module 64 and a taper tension calculating module.
Detailed Description
The invention is further described with reference to the following figures and detailed description.
As shown in the figure, the invention provides a taper tension control system for coiling a film-coated plate, which comprises a coiling machine 5, a frequency converter module 4 for controlling the torque of the coiling machine 5, a displacement encoder module 2 for detecting the coiling length of the film-coated plate, a human-computer interface 7, a controller 6 and a communication module 1, wherein the human-computer interface 7, the displacement encoder module 2 and the communication module 1 are electrically connected with the controller 6, the input end of the frequency converter module 4 is electrically connected with the communication module 1, the output end of the frequency converter module 4 is electrically connected with the coiling machine 5, the invention has the advantages that the coiling length of the film-coated plate is detected by the displacement encoder module 4, the detected data is transmitted to the controller 6 by the displacement encoder module 4, the controller 6 calculates the taper tension value, the communication module 1 transmits the taper tension value to the frequency converter module 4 to change the output value of the torque of the, thereby control the moment of torsion of coiling machine output, realize that tapering tension control is rolled up and is rolled up the tectorial membrane board, the reliability is high.
The controller 6 is a PLC and is convenient to control.
The device also comprises a proximity switch 3 for controlling the pulse accumulated value of the displacement encoder module 2 to be cleared, wherein the proximity switch 3 is arranged above the laminating plate cutting device, the controller 6 is electrically connected with the proximity switch 3, the pulse accumulated value of the displacement encoder is cleared when the laminating plate is rolled and cut, so that the next cutting is facilitated, further, the proximity switch 3 is arranged above the cutting device and moves up and down along with the cutting to detect whether the material is cut off, and a detected signal is transmitted to the linear velocity calculation module 61 and the rolling length calculation module 62 in a Boolean quantity mode. And clearing the pulse accumulated value of the displacement encoder module 2 when the film coating plate is coiled and cut. And recording and storing the length of the film-coated roll of the current product which is off-line, so as to provide a basis for inquiring and checking the length of each product after the production task is completed.
The PLC selects Siemens S7-200 SMAR, is provided with a Siemens special high-speed processor chip, has the basic instruction execution time of 0.15us, and is quick in response and high in efficiency.
It still includes backup pad 12, the side of backup pad 12 one end be equipped with solid fixed ring 9, solid fixed ring 9 cover establish on driving roller 8, displacement encoder module 2 establish on the support frame 10 other end, simple structure is convenient for fix displacement encoder module 2 on driving roller 8.
The outer circumference of the fixing ring 9 is provided with at least two fixing holes 11, the driving roller 8 is provided with a mounting hole corresponding to the fixing holes 11, a screw penetrates through the fixing holes 11 and is in threaded connection with the mounting hole, so that the fixing ring is convenient to mount and dismount, and the reliability is high.
The fixing ring 9 and the displacement encoder module 2 are respectively positioned on two side surfaces of the supporting plate 12 and are reasonably distributed, and interference cannot be generated.
The communication module 1 adopts an rs485 communication mode, and is high in reliability.
The coiling machine 5 provides tension for the film coating plate, and is a device for coiling the film coating plate into a coil shape, and the speed and the torque of the device are controlled by the frequency converter module 4; the frequency converter module 4 receives a torque given instruction of a controller 6(PLC) and outputs electric energy of torque current, voltage and frequency to control a coiler motor; the displacement encoder module 2 is arranged on a driving roller 8 of a film coating plate production line, the film coating plate is wrapped on the driving roller 8 and rotates along with the rotation of the driving roller 8 so as to detect the conveyed film coating plate, and the detected information is transmitted to a rolling length calculation module in the form of pulse signals.
Specifically, the controller 6 includes a linear velocity calculation module 61, a winding length calculation module 62, a winding weight calculation module 63, and a taper tension calculation module 64. The linear velocity calculation module 61 is an internal linear velocity calculation program; the rolling length calculation module 62 includes a rolling length calculation program; the rolling weight calculation module 63 includes a rolling weight calculation program; the taper tension calculation module 64 is a program for calculating the taper tension.
The linear velocity calculation module 61 executes the linear velocity calculation module according to the pulse signal transmitted by the displacement encoder module 2 through the controller 6(PLC) timed interrupt function, and executes the linear velocity calculation module 61 once every 10ms, thereby calculating the pulse amount received every 10ms, then calculates the length value of each pulse according to the diameter of the measuring wheel of the displacement encoder module 2 and the number of pulses per turn of the displacement encoder module 2, then calculates the movement amount of the 10ms material according to the pulse amount received every 10ms and the length value of each pulse, converts the movement amount of the 10ms material into the linear velocity value per minute, and transmits the real-time linear velocity data to a human-machine interface (HMI).
Calculating the linear velocity: linear velocity formula (1) C ═ pi d; (2) LP is C/P; (3) Δ P ═ P0-P1; (4) V ═ LP ═ Δ P. In the above formula, C is the perimeter, d is the diameter (the diameter of a measuring wheel installed on an encoder), pi is the circumferential rate, LP is the length corresponding to one pulse, P is the number of pulses per circle of the encoder (1000P/R), P0 is the real-time accumulated pulse output by the encoder, P1 is the accumulated pulse of the previous period, Δ P is the incremental pulse value in 100ms, and V is the linear velocity value of 100 ms. The PLC executes a linear velocity calculation subroutine every 100ms through a timed interrupt function instruction, subtracts the accumulated pulse number of the current execution period from the accumulated pulse number of the last execution period to obtain the pulse number increased within 100ms, and multiplies the pulse number by the length corresponding to one pulse to obtain a velocity value. The calculated linear velocity value is transmitted to a touch screen on the human-machine interface 7 for monitoring when an operator adjusts the velocity.
The winding length calculation module 62 obtains real-time length data according to the pulse signal transmitted by the displacement encoder module 2, the diameter of the measuring wheel of the displacement encoder module 2, and the number of pulses per turn of the displacement encoder module 2, and transmits the real-time length data to the winding weight calculation module 63, the taper tension calculation module 64, and a human-machine interface (HMI).
The winding weight calculation module 63 calculates the real-time winding weight according to the material density and the material specification set by the human-machine interface 7(HMI) and the length value calculated by the winding length calculation module 62.
A winding length and weight calculation formula (1) C ═ pi d; (2) l ═ C/P × P0; (3) abL; (4) and m is rho v. In the above formula, C is the circumference, d is the diameter (the diameter of a measuring wheel mounted on an encoder), pi is the circumference ratio, P is the number of pulses per revolution of the encoder (1000P/R), P0 is the real-time accumulated pulses output by the encoder, L is the winding length (real-time dynamic value), a is the product thickness, b is the product width, v is the product volume, ρ is the product density, and m is the winding weight (real-time dynamic value). The weight is transmitted to a touch screen on the human-computer interface 7, and an operator makes reference data when cutting the product.
The taper tension calculation module 64 obtains a taper tension value according to the real-time length data, a basic tension value set by the human-machine interface 7(HMI), a taper tension compensation rate, and a taper tension compensation length. The taper tension calculating module 64 calculates the real-time length data calculated by the rolling length calculating module 62, the basic tension value set by the parameter setting picture of the human-machine interface (HMI)7, the taper tension compensation rate, and the taper tension compensation length by a program, and rolls up with a set maximum compensation value in the initial rolling state (the minimum roll diameter), then gradually increases the roll diameter according to the increase of the rolling length, but gradually decreases the rolling tension until the rolling length reaches the set value of the taper tension compensation length set by the parameter setting picture of the human-machine interface (HMI)7, and obtains the dynamic taper tension value in the process, and sends the real-time dynamic taper tension data to the monitoring picture of the human-machine interface (HMI)7 and the communication module 1.
The taper tension calculation formula (1) 1-K ((L-L0)/L0) ═ C; (2) c × T ═ T0. Wherein K is a compensation coefficient, L is a real-time winding length, L0 is a compensation length, C is a taper tension coefficient, T is a set tension, T0 is a taper tension, the compensation coefficient (K) is set to be 0.2, and the compensation length (L0) is set to be 500 m. The roll diameter is used for calculating in the existing taper tension calculation, and the roll diameter value fluctuation condition exists in the roll diameter calculation because the product aimed at by the technical scheme is a film pasting, the film thickness of each circle of single-sided pasting reaches 90um, the diameter increment of each circle has 180um, the diameter increment of the double-sided pasting is 360um, and the film has no supporting strength. The technical scheme is changed into length control.
Specifically, the human-machine interface 7(HMI) transmits external input parameters such as the diameter of the measurement wheel of the displacement encoder module 2, the number of pulses per loop of the displacement encoder module 2, the material density, the material width, the material thickness, the base tension value, the taper tension compensation rate, the taper tension compensation length, and the like to the controller 6(PLC), and displays the winding length calculated by the winding length calculation module 62 of the receiving controller 6(PLC), the winding weight calculated by the winding weight calculation module 63, the linear velocity value calculated by the linear velocity calculation module 61, the dynamic real-time value of the taper tension value calculated by the taper tension calculation module 64, and 20 sets of historical winding length values.
That is, the human machine interface 7(HMI) includes a monitoring screen including data monitoring functions of a current winding length, a previous winding length, a winding weight, a taper tension real-time value, a material specification, and the like, a history screen, a parameter setting screen. The history screen stores the data of the film-coated rolls wound up in the first 20 rolls, and stores 20 sets of data in a stack. The parameter setting picture is used for transmitting external input parameters such as the diameter of a measuring wheel of the displacement encoder 2, the pulse number per circle of the displacement encoder module 2, the material density, the material width, the material thickness, the basic tension value, the taper tension compensation rate, the taper tension compensation length and the like to a controller (PLC). Further, the rolling length calculation module 62 further includes 1 rolling length recording function, and respectively stores the length data of the first 20 rolled film rolls into the continuous 20 word storage addresses, and stores 20 sets of data in a stacked manner. Through the signal condition of the cutting zero clearing sensor 3, 1 new film covering roll length data is generated every time the cutting is performed for 1 time, then the new length data is stored in the storage position 1, the original storage position data of the storage position 1 is transferred to the storage position 2, and the like, the last recorded data overflows after the value is reached, the last data is moved out of the recording storage area, and more steel roll data records can be defined according to requirements.
The communication module 1 is used for connecting the dynamic taper tension value calculated by the taper tension calculation module 64 with the controller (PLC)6 through communication established by the rs485 communication mode and sending dynamic taper tension data to the winder frequency converter 4 in a Modbus protocol RTU transmission mode to change the torque set value of the frequency converter in real time, so that the torque output by the winder 5 is controlled, and the film-coated plate is wound and taken by taper tension control.
Specifically, the principle of the method is that the displacement encoder module 4 is used for detecting the coiling length of the film covering plate, the displacement encoder module 4 transmits detected data to the controller 6, the controller 6 calculates a taper tension value, the communication module 1 transmits the taper tension value to the frequency converter module 4, and the torque output value of the frequency converter is changed, so that the torque output by the coiling machine is controlled, the film covering plate is coiled by taper tension control, and the reliability is high.
The same displacement encoder pulse signal can be used for linear velocity calculation and coiling length measurement, and data are processed independently according to different module functions.
In addition, the winding length calculation module 62 written by the PLC instruction realizes a winding length history recording function. Mainly through the signal condition of a proximity switch, 1 new film covering roll length data is generated after cutting for 1 time, then the new length data is stored in a storage bit No. 1, the original storage bit data No. 1 is transferred to a storage bit No. 2, and the like, and the last data is moved out of a recording storage area when the last recorded data overflows.
The control method comprises the following steps: firstly, fixing a displacement encoder module 4 on a driving roller 8, so that the driving roller synchronously measures the displacement of the film coating plate and obtains a pulse signal of the displacement; secondly, executing a linear velocity calculation module through a timing interrupt function of a controller 6(PLC) according to a pulse signal transmitted by the displacement encoder module 2, executing the linear velocity calculation module 61 every 10ms, thereby calculating the pulse quantity received every 10ms, then calculating the length value of each pulse according to the diameter of a measuring wheel of the displacement encoder module 2 and the number of pulses of each circle of the displacement encoder module 2, then calculating the movement quantity of a 10ms material according to the pulse quantity received every 10ms and the length value of each pulse, converting the movement quantity of the 10ms material into a linear velocity value per minute, and transmitting real-time linear velocity data to a human-machine interface (HMI); acquiring real-time length data according to the pulse signals transmitted by the displacement encoder module 2, the diameter of a measuring wheel of the displacement encoder module 2 and the number of pulses per circle of the displacement encoder module 2, and transmitting the real-time length data to a rolling weight calculation module 63, a taper tension calculation module 64 and a human-machine interface (HMI); fourthly, calculating the real-time coiling weight according to the material density and the material specification set by a human-machine interface 7(HMI) and the length value calculated by the coiling length calculating module 62; and fifthly, setting a basic tension value and a taper tension compensation rate according to the real-time length data calculated by the rolling length calculation module 62 and a parameter setting picture of a human-machine interface (HMI) 7. The taper tension compensation length is calculated by a program and coiled by a set maximum compensation value in an initial coiling state (the coil diameter is minimum), then the coil diameter is gradually increased according to the increment of the coiling length, but the coiling tension is gradually decreased until the coiling length reaches a set value of the taper tension compensation length set by a parameter setting picture of a human-machine interface (HMI)7, the compensation is stopped, a dynamic taper tension value is obtained in the process, and real-time dynamic taper tension data is sent to a monitoring picture of the human-machine interface (HMI)7 and a communication module 1; and sixthly, the communication module 1 is used for connecting the dynamic taper tension value calculated by the taper tension calculation module 64 with the controller (PLC)6 through communication established by the rs485 communication mode and sending dynamic taper tension data to the frequency converter module 4 in a Modbus protocol RTU transmission mode to change the torque set value of the frequency converter in real time, so that the torque output by the winding machine 5 is controlled, and the film-coated plate is wound by taper tension control.
On the basis of the above-described aspects, if various changes or modifications to the present invention are made without departing from the spirit and scope of the present invention, it is intended that the present invention also include these changes and modifications if they fall within the scope of the claims and the equivalent technical scope of the present invention.
Claims (10)
1. The utility model provides a tapering tension control system that tectorial membrane board was batched which characterized in that: the film coating plate coiling length detection device comprises a coiling machine (5), a frequency converter module (4) for controlling the torque of the coiling machine (5), a displacement encoder module (2) for detecting the coiling length of a film coating plate, a human-computer interface (7), a controller (6) and a communication module (1), wherein the human-computer interface (7), the displacement encoder module (2) and the communication module (1) are electrically connected with the controller (6), the input end of the frequency converter module (4) is electrically connected with the communication module (1), and the output end of the frequency converter module (4) is electrically connected with the coiling machine (5).
2. The system for controlling taper tension of film laminating plate reeling according to claim 1, wherein: the controller (6) is a PLC.
3. A system for controlling taper tension in roll-up of mulch applicator according to claim 2, wherein: the laminating plate cutting device is characterized by further comprising a proximity switch (3) used for controlling the displacement encoder module (2) to clear the pulse accumulated value, the proximity switch (3) is arranged above the laminating plate cutting device, and the controller (6) is electrically connected with the proximity switch (3).
4. A system for controlling taper tension in roll-up of mulch applicator according to claim 2, wherein: the PLC is Siemens S7-200 SMAR.
5. The system for controlling taper tension of film laminating plate reeling according to claim 1, wherein: the displacement encoder module (2) is arranged on a driving roller (8) on the film laminating plate production line.
6. A system for controlling taper tension of film laminate reeling according to claim 5, wherein: it still includes backup pad (12), the side of backup pad (12) one end be equipped with solid fixed ring (9), solid fixed ring (9) cover establish on driving roller (8), displacement encoder module (2) establish on support frame (8) other end.
7. A system for controlling taper tension of film laminate reeling according to claim 6, wherein: the outer circumference of the fixing ring (9) is provided with at least two fixing holes (11), and the driving roller (8) is provided with a mounting hole corresponding to the fixing holes (11).
8. A system for controlling taper tension of film laminate reeling according to claim 6, wherein: the fixing ring (9) and the displacement encoder module (2) are respectively positioned on two side surfaces of the supporting plate (12).
9. The system for controlling taper tension of film laminating plate reeling according to claim 1, wherein: the communication module (1) adopts an rs485 communication mode.
10. The control method of the taper tension control system for film laminating plate reeling according to claims 1 to 9, characterized in that: it comprises the following steps:
firstly, fixing a displacement encoder module (4) on a driving roller (8) to synchronously measure the displacement of the film coating plate and obtain a pulse signal of the displacement;
secondly, a linear velocity calculation module is executed through a controller (6) timing interrupt function according to a pulse signal transmitted by a displacement encoder module (2), the linear velocity calculation module (61) is executed every 10ms, so that the pulse quantity received every 10ms is calculated, then the length value of each pulse is calculated according to the diameter of a measuring wheel of the displacement encoder module (2) and the number of pulses of each circle of the displacement encoder module (2), then the moving amount of a 10ms material is calculated according to the pulse quantity received every 10ms and the length value of each pulse, then the moving amount of the 10ms material is converted into a linear velocity value per minute, and real-time linear velocity data is transmitted to a human-computer interface (7);
acquiring real-time length data according to the pulse signals transmitted by the displacement encoder module (2), the diameter of a measuring wheel of the displacement encoder module (2) and the number of pulses per circle of the displacement encoder module (2), and transmitting the real-time length data to the rolling weight calculation module (63), the taper tension calculation module (64) and the human-computer interface (7);
fourthly, calculating the real-time coiling weight according to the material density and the material specification set by the human-computer interface (7) and the length value calculated by the coiling length calculation module (62);
fifthly, setting a basic tension value and a taper tension compensation rate set by a picture according to the real-time length data calculated by the rolling length calculation module (62) and the parameters of the human-computer interface (7), and sending the real-time dynamic taper tension data to a monitoring picture of the human-computer interface (7) and the communication module (1);
and sixthly, the dynamic taper tension value calculated by the taper tension calculation module (64) is connected with the controller (6) and the frequency converter module (4) in a communication mode rs485, and dynamic taper tension data are sent to the frequency converter module (4) in a Modbus protocol RTU transmission mode to change the set value of the torque of the frequency converter in real time, so that the torque output by the winding machine (5) is controlled, and the coated plate is wound and taken by taper tension control.
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| CN202010363739.4A CN111674998A (en) | 2020-04-30 | 2020-04-30 | Taper tension control system for film-coated plate reeling and control method thereof |
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| CN202010363739.4A CN111674998A (en) | 2020-04-30 | 2020-04-30 | Taper tension control system for film-coated plate reeling and control method thereof |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112239101A (en) * | 2020-10-30 | 2021-01-19 | 骏业塑胶（深圳）有限公司 | Film winding tension control system and method |
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