CN111443670A - Control method and device for photovoltaic glass coating production line - Google Patents

Control method and device for photovoltaic glass coating production line Download PDF

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Publication number
CN111443670A
CN111443670A CN202010254332.8A CN202010254332A CN111443670A CN 111443670 A CN111443670 A CN 111443670A CN 202010254332 A CN202010254332 A CN 202010254332A CN 111443670 A CN111443670 A CN 111443670A
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roller way
film
coating section
glass substrate
speed
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CN111443670B (en
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巩恒亮
邢宝山
叶坤
夏鹏华
郑纤秀
王亮
王安乐
许新林
杨华龙
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Bengbu Triumph Engineering and Technology Co Ltd
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Bengbu Triumph Engineering and Technology Co Ltd
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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
    • G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
    • G05B19/41865—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by job scheduling, process planning, material flow
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/001—General methods for coating; Devices therefor
    • C03C17/002—General methods for coating; Devices therefor for flat glass, e.g. float glass
    • 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
    • G05B2219/30—Nc systems
    • G05B2219/32—Operator till task planning
    • G05B2219/32252—Scheduling production, machining, job shop
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Coating Apparatus (AREA)
  • Automation & Control Theory (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Quality & Reliability (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
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  • Organic Chemistry (AREA)
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Abstract

The invention discloses a control method and a device for a photovoltaic glass coating production line, wherein the method comprises the following steps: when the film plating machine is started, the film feeding roller way, the film plating section roller way and the film discharging roller way of the film plating machine are operated at a speed of V2; when the tail end of the second glass substrate glass2 passing through the sheet feeding roller way enters the inlet of the roller way of the film coating section, if the distance S1 from the tail end of the first glass substrate glass1 on the sheet feeding roller way to the outlet of the sheet feeding roller way is greater than the preset distance Sabs, the sheet feeding roller way operates at the speed V1, otherwise the speed V2 of the sheet feeding roller way is kept unchanged; when the head end of the first glass substrate glass1 on the film feeding roller way reaches the inlet of the film coating section roller way, the speed of the film feeding roller way is kept consistent with that of the film coating section belt, and the film feeding roller way and the film coating section belt run at the speed V1; the invention has the advantages that: the working efficiency of the photovoltaic glass coating production line is improved.

Description

Control method and device for photovoltaic glass coating production line
Technical Field
The invention relates to the field of glass deep processing equipment, in particular to a control method and a control device for a photovoltaic glass coating production line.
Background
With the increasing market demand of coated glass, the scale of solar photovoltaic glass coating production lines is continuously enlarged. However, the efficiency of the existing coating production line is low at present because the speeds of a sheet feeding roller way and a sheet discharging roller way of the coating machine are always consistent with the speed of a coating section. When the coating operation is carried out in the coating process requirement, the running speed of the roller way of the coating section is limited, and the roller way cannot run at a high speed, otherwise, the quality of the coating film layer is influenced. In the low-speed conveying process, the time for the single glass substrate to enter the coating section roller way is prolonged due to the distance, the coating machine does useless work when the distance between the substrates reaches the coating section, and the coating efficiency is low. In a production line with daily quantity of 5000 glass substrates as an example, if the conveying time of a single glass substrate is saved by 3 seconds, the yield per day can be increased by 1048 glass substrates, and the yield is increased by 20.96%. It can be seen that the current coating production technology has a great progress space, and the efficiency of the production line needs to be improved to meet the increasingly expanded market demand.
Chinese patent publication No. CN109182995A discloses a coating control system for a non-uniform film product, which comprises an upper computer, a P L C control host, an information acquisition device, a motor servo controller and a sputtering cathode electrical source controller, wherein the information acquisition device is used for detecting the position of a glass substrate on a conveying roller way, the temperature and air pressure information in a process cavity, the P L C control host is used for receiving the detection information sent by the signal acquisition device, the motor servo controller and the sputtering cathode electrical source controller are controlled to work according to the detection information, the motor servo controller is used for sending control signals to a motor and controlling the motor to rotate according to different set speed curves, the motor servo controller controls the motor to rotate according to the set motor rotating speed curve, so that n conveying rollers corresponding to each film can be independently adjusted and controlled, the speed of the glass substrate under the corresponding sputtering cathode is adjustable, the thickness of a coated film is controllably changed, the coating of the non-uniform film product which can be continuously produced in large area is realized, the thickness of the non-uniform film product is mainly controlled by controlling n conveying rollers corresponding to control the thickness of each film, and the thickness of the film is not related to the speed of the cathode.
Disclosure of Invention
The invention aims to solve the technical problem of how to improve the working efficiency of a coating production line.
The invention solves the technical problems through the following technical means: a control method of a photovoltaic glass coating production line comprises the following steps:
the method comprises the following steps: when the film plating machine is started, the film feeding roller way, the film plating section roller way and the film discharging roller way of the film plating machine are operated at a speed of V2;
step two: when the tail end of the second glass substrate glass2 passing through the sheet feeding roller way enters the inlet of the roller way of the film coating section, if the distance S1 from the tail end of the first glass substrate glass1 on the sheet feeding roller way to the outlet of the sheet feeding roller way is greater than the preset distance Sabs, the sheet feeding roller way operates at the speed V1, otherwise the speed V2 of the sheet feeding roller way is kept unchanged; when the head end of the first glass substrate glass1 on the film feeding roller way reaches the inlet of the film coating section roller way, the speed of the film feeding roller way is kept consistent with that of the film coating section belt, and the film feeding roller way and the film coating section belt run at the speed V1;
step three, in the sheet discharging roller way, when the tail part of the third glass substrate glass3 passing through the film coating section enters the inlet of the sheet discharging roller way, calculating the time T2 required by the movement S2 of the belt of the film coating section roller way at the speed V1, increasing the speed of the sheet discharging roller way from the speed V2 to the speed V3 to send out the third glass substrate glass3 coated with the film, timing the operation time of the sheet discharging roller way by the P L C module, and keeping the speed of the sheet discharging roller way consistent with the speed of the film coating section roller way if the operation timing time Tc is more than or equal to T2.
According to the invention, the running speeds of the sheet feeding roller way, the coating section roller way and the sheet discharging roller way are controlled in real time during sheet feeding and sheet discharging, and on the premise of not changing the requirements of the coating section process, based on coating machine equipment in the original coating production line, no additional new component is needed, and only by adding an intelligent roller way control strategy in a P L C module, the interval transmission time between glass substrates is shortened, and the working efficiency of the photovoltaic glass coating production line is greatly improved.
Preferably, the preset distance Sabs is a belt displacement distance corresponding to a motor acceleration and deceleration time period.
Preferably, the belt displacement S2 is the distance between the head end of the second glass substrate glass2 on the coating section roller way and the outlet of the coating section roller way belt roller.
Preferably, the second step further comprises:
when the coating machine is started to operate, when the tail end of the second glass substrate glass2 passing through the film feeding roller way enters the inlet of the coating section roller way, the P L C module collects the falling edge signal of the photoelectric sensor X2 placed between the film feeding roller way and the coating section roller way at the moment, the P L C module shows that the same glass substrate is not conveyed by the film feeding roller way and the coating section roller way at the moment, when the P L C module receives the falling edge signal, the first glass substrate glass1 can enter the film feeding roller way, and the formula S1 is Lj–vj*TjCalculating the distance S1 from the tail end of the first glass substrate glass1 on the sheet feeding roller way to the outlet of the sheet feeding roller way, wherein T isjThe time from the head end of the first glass substrate glass1 entering the sheet feeding roller table vjThe speed of the current feed roller way, LjThe length of the sheet feeding roller way is shown.
Preferably, the third step further comprises:
when the tail part of the third glass substrate glass3 passing through the film coating section enters the inlet of the film discharging roller way, a photoelectric sensor X3 between the film discharging roller way and the film coating section roller way generates a falling edge signal, which indicates that the same glass substrate is not conveyed by the film discharging roller way and the film coating section roller way at the same time, and the speed of the film discharging roller way is accelerated to V3In operation, when the P L C module receives a falling edge signal of the sensor, the film is coatedThe new glass substrate entering the roller way, namely the second glass substrate glass2, is obtained by using the formula T2＝Ld/vd-TdCalculating the time T required by the head end of the glass substrate on the current coating section to reach the film outlet2Wherein, TdThe time, v, from the head end of the second glass substrate glass2 entering the roller way of the coating sectiondThe speed of the roller table of the front coating section, LdThe length of the roller way of the coating section;
starting to accelerate the sheet discharging roller way, starting to time the acceleration timing time Tc set in the P L C module, and when the time Tc is more than or equal to T2The speed of the film discharging roller way is required to be consistent with that of the film coating section, so that the speed of the film discharging roller way is reduced to V2 for operation.
The invention also provides a control device of the photovoltaic glass coating production line, which comprises:
the starting module is used for enabling a film feeding roller way, a film coating section roller way and a film discharging roller way of the film coating machine to operate at a speed of V2 when the film coating machine is started;
the film feeding control module is used for enabling the film feeding roller way to operate at a speed V1 if the distance S1 from the tail end of the first glass substrate glass1 on the film feeding roller way to the outlet of the film feeding roller way is greater than the preset distance Sabs when the tail end of the second glass substrate glass2 passing through the film feeding roller way enters the inlet of the film coating section roller way, and otherwise, the speed V2 of the film feeding roller way is kept unchanged; when the head end of the first glass substrate glass1 on the film feeding roller way reaches the inlet of the film coating section roller way, the speed of the film feeding roller way is kept consistent with that of the film coating section belt, and the film feeding roller way and the film coating section belt run at the speed V1;
and the sheet discharging control module is used for calculating the time T2 required by the movement S2 of the belt of the film coating section roller way at the speed V1 when the tail part of the third glass substrate glass3 passing through the film coating section enters the inlet of the sheet discharging roller way in the sheet discharging roller way, the speed of the sheet discharging roller way is increased from the speed V2 to the speed V3 to send out the third glass substrate glass3 coated with the film, the P L C module times the operation time of the sheet discharging roller way, and if the operation time Tc is more than or equal to T2, the speed of the sheet discharging roller way is kept consistent with that of the film coating section roller way.
Preferably, the preset distance Sabs is a belt displacement distance corresponding to a motor acceleration and deceleration time period.
Preferably, the belt displacement S2 is the distance between the head end of the second glass substrate glass2 on the coating section roller way and the outlet of the coating section roller way belt roller.
Preferably, the film feeding control module is further configured to:
when the coating machine is started to operate, when the tail end of the second glass substrate glass2 passing through the film feeding roller way enters the inlet of the coating section roller way, the P L C module collects the falling edge signal of the photoelectric sensor X2 placed between the film feeding roller way and the coating section roller way at the moment, the P L C module shows that the same glass substrate is not conveyed by the film feeding roller way and the coating section roller way at the moment, when the P L C module receives the falling edge signal, the first glass substrate glass1 can enter the film feeding roller way, and the formula S1 is Lj–vj*TjCalculating the distance S1 from the tail end of the first glass substrate glass1 on the sheet feeding roller way to the outlet of the sheet feeding roller way, wherein T isjThe time from the head end of the first glass substrate glass1 entering the sheet feeding roller table vjThe speed of the current feed roller way, LjThe length of the sheet feeding roller way is shown.
Preferably, the outgoing control module is further configured to:
when the tail part of the third glass substrate glass3 passing through the film coating section enters the inlet of the film discharging roller way, a photoelectric sensor X3 between the film discharging roller way and the film coating section roller way generates a falling edge signal, which indicates that the same glass substrate is not conveyed by the film discharging roller way and the film coating section roller way at the same time, and the speed of the film discharging roller way is accelerated to V3In operation, when a falling edge signal of the sensor is received in the P L C module, if a new glass substrate entering the coating section roller way is the second glass substrate glass2, the formula T is used2＝Ld/vd-TdCalculating the time T required by the head end of the glass substrate on the current coating section to reach the film outlet2Wherein, TdThe time, v, from the head end of the second glass substrate glass2 entering the roller way of the coating sectiondThe speed of the roller table of the front coating section, LdThe length of the roller way of the coating section;
the P L C module is arranged in the opening acceleration of the sheet discharging roller wayTiming with a fixed accelerated timing time Tc, when the time Tc is more than or equal to T2The speed of the film discharging roller way is required to be consistent with that of the film coating section, so that the speed of the film discharging roller way is reduced to V2 for operation.
The invention has the advantages that the operation speeds of the sheet feeding roller way, the film coating section roller way and the sheet discharging roller way are controlled in real time during sheet feeding and sheet discharging, and on the premise of not changing the requirements of the film coating section process, the distance transmission time between glass substrates is shortened and the work efficiency of the photovoltaic glass film coating production line is greatly improved only by adding an intelligent roller way control strategy into a P L C module without adding new components and parts on the basis of film coating machine equipment in the original film coating production line.
Drawings
FIG. 1 is a flow chart of a control method of a photovoltaic glass coating production line according to an embodiment of the present invention;
FIG. 2 is a schematic view of a production line of a control method of a photovoltaic glass coating production line according to an embodiment of the present invention;
FIG. 3 is a flowchart of an algorithm of a film feeding control in a control method of a photovoltaic glass film coating production line according to an embodiment of the present invention;
FIG. 4 is a flowchart of an algorithm of the film discharging control in the control method of the photovoltaic glass film coating production line according to the embodiment of the present invention;
fig. 5 is a software block diagram of a P L C module in the control method of the photovoltaic glass coating line according to the embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1 and 2, a control method of a photovoltaic glass coating production line includes:
step S1: when the film plating machine is started, the film feeding roller way, the film plating section roller way and the film discharging roller way of the film plating machine are operated at a speed of V2;
step S2: when the tail end of the second glass substrate glass2 passing through the sheet feeding roller way enters the inlet of the roller way of the film coating section, if the distance S1 from the tail end of the first glass substrate glass1 on the sheet feeding roller way to the outlet of the sheet feeding roller way is greater than the preset distance Sabs, the sheet feeding roller way operates at the speed V1, otherwise the speed V2 of the sheet feeding roller way is kept unchanged; when the head end of the first glass substrate glass1 on the film feeding roller way reaches the inlet of the film coating section roller way, the speed of the film feeding roller way is kept consistent with that of the film coating section belt, and the film feeding roller way and the film coating section belt run at the speed V1; the preset distance Sabs is the belt displacement distance corresponding to the motor acceleration and deceleration time period. The calculation process of the distance S1 specifically includes:
when the coating machine is started to operate, when the tail end of the second glass substrate glass2 passing through the film feeding roller way enters the inlet of the coating section roller way, the P L C module collects the falling edge signal of the photoelectric sensor X2 placed between the film feeding roller way and the coating section roller way at the moment, the P L C module shows that the same glass substrate is not conveyed by the film feeding roller way and the coating section roller way at the moment, when the P L C module receives the falling edge signal, the first glass substrate glass1 can enter the film feeding roller way, and the formula S1 is Lj–vj*TjCalculating the distance S1 from the tail end of the first glass substrate glass1 on the sheet feeding roller way to the outlet of the sheet feeding roller way, wherein T isjThe time from the head end of the first glass substrate glass1 entering the sheet feeding roller table vjThe speed of the current feed roller way, LjThe length of the sheet feeding roller way is shown.
In order to facilitate understanding of the control method of the present invention, as shown in fig. 3, the control method of the present invention is an algorithm flowchart of the film feeding control in the control method of the photovoltaic glass film coating production line, and the algorithm execution steps are as follows:
s101: the three-section roller way motor is started to run, and the speed is set to be the speed V required by the coating process2Execution is performed to execute S102.
S102: and (5) judging whether the tail end of the glass substrate is detected to enter the roller way inlet of the film coating section by the sensor X2, and executing S103.
S103: calculating the distance S from the tail end of the glass substrate on the sheet feeding roller way to the outlet of the sheet feeding roller way1The calculation is completed to execute S104.
S104: judgment S1Whether or not greater than Sabs(the motor acceleration and deceleration time period corresponds to the belt displacement distance), judging that the branch is executed, and if the judgment result is Y, executing S105; if the determination result is N, S107 is performed.
S105: and (4) lifting the speed of the sheet feeding roller way from V2 to V1(V1> V2), and completing the execution of S106.
S106: judgment sensor X2And (5) judging whether the glass substrate reaches the outlet of the sheet feeding roller way or not, and executing S107.
S107: the setting of the feeding roller way to run at the speed of V2 is carried out.
Step S3, in the sheet discharging roller way, when the tail part of a third glass substrate glass3 passing through the film coating section enters the inlet of the sheet discharging roller way, calculating the time T2 required by the movement of the belt of the film coating section roller way at the speed V1 for moving S2, increasing the speed of the sheet discharging roller way from the speed V2 to the speed V3 to send out the film coated third glass substrate glass3, timing the operation time of the sheet discharging roller way by a P L C module, and keeping the speed of the sheet discharging roller way consistent with the speed of the film coating section roller way if the operation timing time Tc is more than or equal to T2, wherein the belt movement S2 is the distance between the head end of the second glass substrate glass2 on the film coating section and the outlet of the roller way of the film coating section roller way, and the calculation process of the time T2 required by the belt of the film coating section roller way at the speed V1 for moving the belt movement S2 is:
when the tail part of the third glass substrate glass3 passing through the film coating section enters the inlet of the film discharging roller way, a photoelectric sensor X3 between the film discharging roller way and the film coating section roller way generates a falling edge signal, which indicates that the same glass substrate is not conveyed by the film discharging roller way and the film coating section roller way at the same time, and the speed of the film discharging roller way is accelerated to V3In operation, when a falling edge signal of the sensor is received in the P L C module, if a new glass substrate entering the coating section roller way is the second glass substrate glass2, the formula T is used2＝Ld/vd-TdCalculating the time T required by the head end of the glass substrate on the current coating section to reach the film outlet2Wherein, TdThe time, v, from the head end of the second glass substrate glass2 entering the roller way of the coating sectiondThe speed of the roller table of the front coating section, LdThe length of the roller way of the coating section;
starting to accelerate the sheet discharging roller way, starting to time the acceleration timing time Tc set in the P L C module, and when the time Tc is more than or equal to T2The speed of the film discharging roller way is required to be consistent with that of the film coating section, so that the speed of the film discharging roller way is reduced to V2 for operation.
In order to facilitate understanding of the control method of the present invention, as shown in fig. 4, the control method of the present invention is an algorithm flowchart of the film-out control in the control method of the photovoltaic glass film coating production line, and the algorithm execution steps are as follows:
s201: the three-section roller way motor is started to run, and the speed is set to be the speed V required by the coating process2Execution is performed to execute S202.
S202: and (5) judging whether the sensor X3 detects that the tail end of the coated section glass substrate enters the sheet outlet roller way inlet or not, and executing S203.
S203: and (3) judging whether the sensor X2 detects that the glass substrate enters the coating section inlet, executing the process according to the judgment completion direction, if so, executing S204, otherwise, executing S207.
S204: calculating the time T required by the head end of the glass substrate on the coating section to move to the outlet of the belt roller of the coating section2The calculation is completed to execute S205.
S205: velocity of sheet-discharging roller table is controlled from V2Quickly lifted to V3Starting the running timer (T)C) Execution completes execution S206.
S206: judgment of TCAnd if it is greater than or equal to T2, it is judged that execution S207 is completed.
S207: and executing the operation of setting the sheet outlet roller way to run at the speed of V2.
In fig. 1, a sensor X1, a sensor X2, a sensor X3, and a sensor X4 are reference points for calculating the distance between the glass substrates on the sheet feeding roller, the coating section roller, and the sheet discharging roller, respectively, the sensor X1 detects whether a sheet is fed into the sheet feeding roller, and the sensor X4 detects whether a sheet is discharged from the sheet discharging roller. In the roller way speed control method, if the length value of the roller way is large, errors may exist in the calculation of the distance between the glass substrates, and sensors are placed at the outlet and the inlet of the roller way to correct the distance deviation between the glass substrates. The first glass substrate glass1 is a coating film advancing sheet; the second glass substrate glass2 is a glass substrate in coating operation and enters the coating section roller way from the sheet feeding roller way; and the third glass substrate glass3 is a coated sheet, and enters the sheet outlet roller way from the coating section roller way.
The P L C module is mainly used for storing and executing the calculation formula and the control logic of the control method provided by the invention, two roller speed control software blocks are set in the P L C module program, which are respectively a sheet feeding roller speed control software block and an outlet speed control software block, the software blocks comprise the calculation of the distance between glass substrates, the judgment of the acceleration condition of the roller way, the timing of the acceleration operation time and the acquisition of photoelectric signals, in the sheet feeding roller speed control software block, when the P L C module receives the falling edge signal of the sensor X2 in the equipment, the subsequent control strategy takes effect, in the sheet discharging roller speed control software block, when the P L C module receives the falling edge signal of the sensor X3 in the equipment, the subsequent control strategy takes effect.
As shown in fig. 5, the intelligent control software block S301 for the speed of the sheet feeding roller way realizes that if the distance S exists, when the tail end of the second glass substrate glass2 passing through the sheet feeding roller way enters the inlet of the coating section roller way1Greater than SabsV on the sheet-feeding roller table1The speed is kept unchanged if the speed of the sheet feeding roller way is not changed. When the head end of the first glass substrate glass1 newly conveyed on the sheet feeding roller way reaches the inlet of the film coating section roller way, the speed of the sheet feeding roller way is kept consistent with that of the film coating section belt by V1Running at a speed;
the software block S302 for intelligently controlling the speed of the film discharging roller way is realized in the film discharging roller way, when the tail part of the glass substrate on the film plating section enters the inlet of the film discharging roller way, such as glass3 in figure 2, the time T required by the belt displacement S2 when the belt of the film plating section runs at V1 is calculated2The speed of the sheet-discharging roller table is from V2Is lifted to V3Sending out the coated glass substrate, starting to time the running time Tc of the roller way in the software, and if the running time Tc is timed>T2And keeping the speed of the sheet discharging roller way consistent with that of the film coating section roller way.
According to the technical scheme, the control method of the photovoltaic glass coating production line provided by the invention has the advantages that the running speeds of the film feeding roller way, the coating section roller way and the film discharging roller way are controlled in real time during film feeding and film discharging, and under the condition that the requirements of the coating section process are not changed, based on coating machine equipment in the original coating production line, no additional component is needed, and only by adding an intelligent roller way control strategy in a P L C module, the interval transmission time between glass substrates is shortened, and the working efficiency of the photovoltaic glass coating production line is greatly improved.
Example 2
Corresponding to embodiment 1 of the present invention, embodiment 2 of the present invention further provides a control device for a photovoltaic glass coating production line, where the device includes:
the starting module is used for enabling a film feeding roller way, a film coating section roller way and a film discharging roller way of the film coating machine to operate at a speed of V2 when the film coating machine is started;
the film feeding control module is used for enabling the film feeding roller way to operate at a speed V1 if the distance S1 from the tail end of the first glass substrate glass1 on the film feeding roller way to the outlet of the film feeding roller way is greater than the preset distance Sabs when the tail end of the second glass substrate glass2 passing through the film feeding roller way enters the inlet of the film coating section roller way, and otherwise, the speed V2 of the film feeding roller way is kept unchanged; when the head end of the first glass substrate glass1 on the film feeding roller way reaches the inlet of the film coating section roller way, the speed of the film feeding roller way is kept consistent with that of the film coating section belt, and the film feeding roller way and the film coating section belt run at the speed V1;
and the sheet discharging control module is used for calculating the time T2 required by the movement S2 of the belt of the film coating section roller way at the speed V1 when the tail part of the third glass substrate glass3 passing through the film coating section enters the inlet of the sheet discharging roller way in the sheet discharging roller way, the speed of the sheet discharging roller way is increased from the speed V2 to the speed V3 to send out the third glass substrate glass3 coated with the film, the P L C module times the operation time of the sheet discharging roller way, and if the operation time Tc is more than or equal to T2, the speed of the sheet discharging roller way is kept consistent with that of the film coating section roller way.
Specifically, the preset distance Sabs is a belt displacement distance corresponding to a motor acceleration and deceleration time period.
Specifically, the belt displacement S2 is the distance between the head end of the second glass substrate glass2 on the coating section roller way and the outlet of the coating section roller way belt roller.
Specifically, the film feeding control module is further configured to:
when the coating machine is started to operate, when the tail end of the second glass substrate glass2 passing through the film feeding roller way enters the inlet of the coating section roller way, the P L C module collects the falling edge signal of the photoelectric sensor X2 placed between the film feeding roller way and the coating section roller way at the moment, the P L C module shows that the same glass substrate is not conveyed by the film feeding roller way and the coating section roller way at the moment, when the P L C module receives the falling edge signal, the first glass substrate glass1 can enter the film feeding roller way, and the formula S1 is Lj–vj*TjCalculating the distance S1 from the tail end of the first glass substrate glass1 on the sheet feeding roller way to the outlet of the sheet feeding roller way, wherein T isjThe time from the head end of the first glass substrate glass1 entering the sheet feeding roller table vjThe speed of the current feed roller way, LjThe length of the sheet feeding roller way is shown.
Specifically, the outgoing control module is further configured to:
when the tail part of the third glass substrate glass3 passing through the film coating section enters the inlet of the film discharging roller way, a photoelectric sensor X3 between the film discharging roller way and the film coating section roller way generates a falling edge signal, which indicates that the same glass substrate is not conveyed by the film discharging roller way and the film coating section roller way at the same time, and the speed of the film discharging roller way is accelerated to V3In operation, when a falling edge signal of the sensor is received in the P L C module, if a new glass substrate entering the coating section roller way is the second glass substrate glass2, the formula T is used2＝Ld/vd-TdCalculating the time T required by the head end of the glass substrate on the current coating section to reach the film outlet2Wherein, TdThe time, v, from the head end of the second glass substrate glass2 entering the roller way of the coating sectiondThe speed of the roller table of the front coating section, LdThe length of the roller way of the coating section;
starting to accelerate the sheet discharging roller way, starting to time the acceleration timing time Tc set in the P L C module, and when the time Tc is more than or equal to T2The speed of the film discharging roller way is required to be consistent with that of the film coating section, so that the speed of the film discharging roller way is reduced to V2 for operation.
The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (10)

1. A control method of a photovoltaic glass coating production line is characterized by comprising the following steps:
the method comprises the following steps: when the film plating machine is started, the film feeding roller way, the film plating section roller way and the film discharging roller way of the film plating machine are operated at a speed of V2;
step two: when the tail end of the second glass substrate glass2 passing through the sheet feeding roller way enters the inlet of the roller way of the film coating section, if the distance S1 from the tail end of the first glass substrate glass1 on the sheet feeding roller way to the outlet of the sheet feeding roller way is greater than the preset distance Sabs, the sheet feeding roller way operates at the speed V1, otherwise the speed V2 of the sheet feeding roller way is kept unchanged; when the head end of the first glass substrate glass1 on the film feeding roller way reaches the inlet of the film coating section roller way, the speed of the film feeding roller way is kept consistent with that of the film coating section belt, and the film feeding roller way and the film coating section belt run at the speed V1;
step three, in the sheet discharging roller way, when the tail part of the third glass substrate glass3 passing through the film coating section enters the inlet of the sheet discharging roller way, calculating the time T2 required by the movement S2 of the belt of the film coating section roller way at the speed V1, increasing the speed of the sheet discharging roller way from the speed V2 to the speed V3 to send out the third glass substrate glass3 coated with the film, timing the operation time of the sheet discharging roller way by the P L C module, and keeping the speed of the sheet discharging roller way consistent with the speed of the film coating section roller way if the operation timing time Tc is more than or equal to T2.
2. The method as claimed in claim 1, wherein the preset distance Sabs is a belt displacement distance corresponding to a motor acceleration and deceleration time period.
3. The method as claimed in claim 1, wherein the belt displacement S2 is a distance between the head end of the second glass substrate glass2 on the coating section roller way and the outlet of the belt roller of the coating section roller way.
4. The method for controlling the photovoltaic glass coating production line according to claim 1, wherein the second step further comprises:
when the coating machine is started to operate, when the tail end of the second glass substrate glass2 passing through the film feeding roller way enters the inlet of the coating section roller way, the P L C module collects the falling edge signal of the photoelectric sensor X2 placed between the film feeding roller way and the coating section roller way at the moment, the P L C module shows that the same glass substrate is not conveyed by the film feeding roller way and the coating section roller way at the moment, when the P L C module receives the falling edge signal, the first glass substrate glass1 can enter the film feeding roller way, and the formula S1 is Lj–vj*TjCalculating the distance S1 from the tail end of the first glass substrate glass1 on the sheet feeding roller way to the outlet of the sheet feeding roller way, wherein T isjThe time from the head end of the first glass substrate glass1 entering the sheet feeding roller table vjThe speed of the current feed roller way, LjThe length of the sheet feeding roller way is shown.
5. The method for controlling the photovoltaic glass coating production line according to claim 1, wherein the third step further comprises:
when the tail part of the third glass substrate glass3 passing through the film coating section enters the inlet of the sheet outlet roller way, the photoelectric sensor X3 between the sheet outlet roller way and the film coating section roller way generates a falling edge signal to indicate that the sheet is dischargedThe roller way and the coating section roller way do not convey the same glass substrate at the same time, and the speed of the sheet discharging roller way is accelerated to V3In operation, when a falling edge signal of the sensor is received in the P L C module, if a new glass substrate entering the coating section roller way is the second glass substrate glass2, the formula T is used2＝Ld/vd-TdCalculating the time T required by the head end of the glass substrate on the current coating section to reach the film outlet2Wherein, TdThe time, v, from the head end of the second glass substrate glass2 entering the roller way of the coating sectiondThe speed of the roller table of the front coating section, LdThe length of the roller way of the coating section;
starting to accelerate the sheet discharging roller way, starting to time the acceleration timing time Tc set in the P L C module, and when the time Tc is more than or equal to T2The speed of the film discharging roller way is required to be consistent with that of the film coating section, so that the speed of the film discharging roller way is reduced to V2 for operation.
6. A control device for a photovoltaic glass coating production line is characterized by comprising:
the starting module is used for enabling a film feeding roller way, a film coating section roller way and a film discharging roller way of the film coating machine to operate at a speed of V2 when the film coating machine is started;
the film feeding control module is used for enabling the film feeding roller way to operate at a speed V1 if the distance S1 from the tail end of the first glass substrate glass1 on the film feeding roller way to the outlet of the film feeding roller way is greater than the preset distance Sabs when the tail end of the second glass substrate glass2 passing through the film feeding roller way enters the inlet of the film coating section roller way, and otherwise, the speed V2 of the film feeding roller way is kept unchanged; when the head end of the first glass substrate glass1 on the film feeding roller way reaches the inlet of the film coating section roller way, the speed of the film feeding roller way is kept consistent with that of the film coating section belt, and the film feeding roller way and the film coating section belt run at the speed V1;
and the sheet discharging control module is used for calculating the time T2 required by the movement S2 of the belt of the film coating section roller way at the speed V1 when the tail part of the third glass substrate glass3 passing through the film coating section enters the inlet of the sheet discharging roller way in the sheet discharging roller way, the speed of the sheet discharging roller way is increased from the speed V2 to the speed V3 to send out the third glass substrate glass3 coated with the film, the P L C module times the operation time of the sheet discharging roller way, and if the operation time Tc is more than or equal to T2, the speed of the sheet discharging roller way is kept consistent with that of the film coating section roller way.
7. The control device of claim 6, wherein the preset distance Sabs is a belt displacement distance corresponding to a motor acceleration and deceleration time period.
8. The control device of claim 6, wherein the belt displacement S2 is a distance between the head end of the second glass substrate glass2 on the coating section roller way and the outlet of the belt roller of the coating section roller way.
9. The control device of claim 6, wherein the film feeding control module is further configured to:
when the coating machine is started to operate, when the tail end of the second glass substrate glass2 passing through the film feeding roller way enters the inlet of the coating section roller way, the P L C module collects the falling edge signal of the photoelectric sensor X2 placed between the film feeding roller way and the coating section roller way at the moment, the P L C module shows that the same glass substrate is not conveyed by the film feeding roller way and the coating section roller way at the moment, when the P L C module receives the falling edge signal, the first glass substrate glass1 can enter the film feeding roller way, and the formula S1 is Lj–vj*TjCalculating the distance S1 from the tail end of the first glass substrate glass1 on the sheet feeding roller way to the outlet of the sheet feeding roller way, wherein T isjThe time from the head end of the first glass substrate glass1 entering the sheet feeding roller table vjThe speed of the current feed roller way, LjThe length of the sheet feeding roller way is shown.
10. The control device of claim 6, wherein the film discharging control module is further configured to:
when the tail part of the third glass substrate glass3 passing through the film coating section enters the inlet of the sheet discharging roller way, the sheet discharging rollerThe photoelectric sensor X3 between the channel and the coating section roller generates a falling edge signal, which indicates that the same glass substrate is not conveyed by the sheet outlet roller and the coating section roller at the same time, and the speed of the sheet outlet roller is accelerated to V3In operation, when a falling edge signal of the sensor is received in the P L C module, if a new glass substrate entering the coating section roller way is the second glass substrate glass2, the formula T is used2＝Ld/vd-TdCalculating the time T required by the head end of the glass substrate on the current coating section to reach the film outlet2Wherein, TdThe time, v, from the head end of the second glass substrate glass2 entering the roller way of the coating sectiondThe speed of the roller table of the front coating section, LdThe length of the roller way of the coating section;
starting to accelerate the sheet discharging roller way, starting to time the acceleration timing time Tc set in the P L C module, and when the time Tc is more than or equal to T2The speed of the film discharging roller way is required to be consistent with that of the film coating section, so that the speed of the film discharging roller way is reduced to V2 for operation.
CN202010254332.8A 2020-04-02 2020-04-02 Control method and device for photovoltaic glass coating production line Active CN111443670B (en)

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